Page No 99:
Answer:
(i)
(ii)
(iii)
Page No 99:
Question 2:
(i)
(ii)
(iii)
Answer:
(i) H.C.F. of and is .
∴
(ii) H.C.F. of and is .
∴
(iii) âH.C.F. of and is .
∴
Page No 99:
Question 3:
(i) H.C.F. of and is .
∴
(ii) H.C.F. of and is .
∴
(iii) âH.C.F. of and is .
∴
Answer:
(i) H.C.F. of and is .
∴
(ii) H.C.F. of and is .
∴
(iii) H.C.F. of and is .
∴
Page No 99:
Question 4:
(i) H.C.F. of and is .
∴
(ii) H.C.F. of and is .
∴
(iii) H.C.F. of and is .
∴
Answer:
(i) H.C.F. of , and is .
∴
(ii) H.C.F. of , and is .
∴
(iii) H.C.F. of , and is .
∴
Page No 99:
Question 5:
(i) H.C.F. of , and is .
∴
(ii) H.C.F. of , and is .
∴
(iii) H.C.F. of , and is .
∴
Answer:
(i) H.C.F. of , and is .
∴
(ii) H.C.F. of , and is 5.
∴
Page No 99:
Question 6:
(i) H.C.F. of , and is .
∴
(ii) H.C.F. of , and is 5.
∴
Answer:
(i)
(ii)
(iii)
Page No 99:
Question 7:
(i)
(ii)
(iii)
Answer:
We have:
Page No 99:
Question 8:
We have:
Answer:
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Page No 99:
Question 9:
We have:
Answer:
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Page No 99:
Question 10:
We have:
Answer:
We have:
∴
Page No 99:
Question 11:
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∴
Answer:
∴
Page No 99:
Question 12:
∴
Answer:
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Question 13:
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Answer:
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Page No 99:
Question 14:
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Answer:
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Page No 99:
Question 15:
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Answer:
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Page No 99:
Question 16:
We have:
Answer:
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Page No 99:
Question 17:
We have:
Answer:
By grouping the terms:
∴
Page No 99:
Question 18:
By grouping the terms:
∴
Answer:
By suitably arranging the terms:
∴
Page No 99:
Question 19:
By suitably arranging the terms:
∴
Answer:
By suitably arranging the terms:
∴
Page No 99:
Question 20:
By suitably arranging the terms:
∴
Answer:
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∴
Page No 99:
Question 21:
By suitably arranging the terms:
∴
Answer:
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∴
Page No 99:
Question 22:
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∴
Answer:
We have:
∴
Page No 99:
Question 23:
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Answer:
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Page No 99:
Question 24:
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Answer:
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Page No 99:
Question 25:
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Answer:
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Page No 99:
Question 26:
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Answer:
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Page No 99:
Question 27:
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Answer:
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Page No 99:
Question 28:
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Answer:
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∴
Page No 100:
Question 1:
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Answer:
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Page No 100:
Question 2:
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Answer:
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Question 3:
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Answer:
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Answer:
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Answer:
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Question 6:
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Answer:
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Question 7:
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Question 8:
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Answer:
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Question 9:
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Answer:
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Question 10:
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Page No 100:
Question 11:
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Page No 100:
Question 12:
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Answer:
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Page No 100:
Question 13:
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Question 14:
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Answer:
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Page No 100:
Question 15:
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Answer:
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Page No 100:
Question 16:
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Answer:
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Question 17:
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Page No 100:
Question 18:
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Answer:
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Question 19:
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Answer:
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Page No 100:
Question 20:
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Answer:
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Page No 100:
Question 21:
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Answer:
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Question 22:
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Answer:
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Question 23:
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Answer:
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Question 24:
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Answer:
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Question 25:
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Answer:
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Question 26:
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Answer:
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Question 27:
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Answer:
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Page No 100:
Question 28:
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Answer:
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Page No 101:
Question 1:
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Answer:
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Page No 101:
Question 2:
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Answer:
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Page No 101:
Question 3:
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Answer:
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Page No 101:
Question 4:
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Answer:
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Question 5:
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Answer:
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Question 6:
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Question 7:
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Answer:
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Page No 101:
Question 8:
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Answer:
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Page No 101:
Question 9:
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Answer:
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Page No 101:
Question 10:
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Answer:
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Page No 101:
Question 11:
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Answer:
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Page No 101:
Question 12:
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Answer:
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∴
Page No 101:
Question 13:
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Answer:
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Page No 101:
Question 14:
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Answer:
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Page No 101:
Question 15:
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Answer:
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Page No 101:
Question 16:
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Answer:
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Question 17:
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Answer:
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Page No 101:
Question 18:
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Answer:
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∴
Page No 101:
Question 19:
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∴
Answer:
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∴
Page No 102:
Question 1:
We have:
∴
Answer:
Page No 102:
Question 2:
Answer:
Page No 102:
Question 3:
Answer:
Page No 102:
Question 4:
Answer:
Page No 102:
Question 5:
Answer:
Page No 102:
Question 6:
Answer:
Page No 102:
Question 7:
Answer:
Page No 102:
Question 8:
Answer:
Page No 102:
Question 9:
Answer:
Page No 102:
Question 10:
Answer:
Page No 102:
Question 11:
Answer:
Page No 102:
Question 12:
Answer:
Page No 103:
Question 13:
Answer:
Page No 103:
Question 14:
Answer:
Page No 103:
Question 15:
Answer:
Page No 103:
Question 16:
Answer:
Page No 103:
Question 17:
Answer:
Page No 103:
Question 18:
Answer:
Page No 103:
Question 19:
Answer:
Page No 103:
Question 20:
Answer:
Page No 103:
Question 21:
Answer:
Page No 103:
Question 22:
Answer:
Page No 103:
Question 23:
Answer:
Page No 103:
Question 24:
Answer:
Page No 103:
Question 25:
Answer:
Page No 103:
Question 26:
Answer:
Page No 103:
Question 27:
Answer:
Page No 103:
Question 28:
Answer:
Page No 103:
Question 29:
Answer:
Page No 103:
Question 30:
Answer:
Page No 103:
Question 31:
Answer:
Page No 103:
Question 32:
Answer:
Page No 103:
Question 33:
Answer:
Page No 103:
Question 34:
Answer:
Page No 103:
Question 35:
Answer:
Page No 103:
Question 36:
Answer:
Page No 103:
Question 37:
Answer:
Page No 103:
Question 38:
Answer:
Page No 103:
Question 39:
Answer:
Page No 103:
Question 40:
Answer:
Page No 103:
Question 41:
Answer:
Page No 103:
Question 42:
Answer:
Page No 103:
Question 1:
Answer:
(d) 7(a − 3b)(a + 3b)
Page No 103:
Question 2:
(d) 7(a − 3b)(a + 3b)
Answer:
(d) 2x(1 − 4x)(1 + 4x)
Page No 103:
Question 3:
(d) 2x(1 − 4x)(1 + 4x)
Answer:
(c) x(x − 12)(x + 12)
Page No 103:
Question 4:
(c) x(x − 12)(x + 12)
Answer:
(d) 2(1 − 5x)(1 + 5x)
Page No 103:
Question 5:
(d) 2(1 − 5x)(1 + 5x)
Answer:
(a) (a + b)(a + c)
Page No 103:
Question 6:
(a) (a + b)(a + c)
Answer:
(d) (pq − 1) (q + 1)
Page No 103:
Question 7:
(d) (pq − 1) (q + 1)
Answer:
(b) (a − m)(b + n)
Page No 103:
Question 8:
(b) (a − m)(b + n)
Answer:
(a) (a − 1)(b − 1)
Page No 103:
Question 9:
(a) (a − 1)(b − 1)
Answer:
(c) (x + y)(x − z)
Page No 104:
Question 10:
(c) (x + y)(x − z)
Answer:
(c) 3(2m − 3)(2m + 3)
Page No 104:
Question 11:
(c) 3(2m − 3)(2m + 3)
Answer:
(d) x(x + 1)(x − 1)
Page No 104:
Question 12:
(d) x(x + 1)(x − 1)
Answer:
(c) (1 + a + b)(1 − a − b)
Page No 104:
Question 13:
(c) (1 + a + b)(1 − a − b)
Answer:
(c) (x + 2)(x + 4)
Page No 104:
Question 14:
(c) (x + 2)(x + 4)
Answer:
(b) (x + 7)(x − 3)
Page No 104:
Question 15:
(b) (x + 7)(x − 3)
Answer:
(a) (y − 1)(y + 3)
Page No 104:
Question 16:
(a) (y − 1)(y + 3)
Answer:
(c) (5 + x)(8 − x)
Page No 104:
Question 17:
(c) (5 + x)(8 − x)
Answer:
(b) (x + 1)(2x + 3)
Page No 104:
Question 18:
(b) (x + 1)(2x + 3)
Answer:
(c) (3a − 2)(2a − 3)
Page No 104:
Question 19:
(c) (3a − 2)(2a − 3)
Answer:
(a) (2z − 1)(2z − 3)
Page No 104:
Question 20:
(a) (2z − 1)(2z − 3)
Answer:
(b) (1 + 8y)(3 − y)
View NCERT Solutions for all chapters of Class 8