Q7. (ii) (x + a)(x + b) = x2 + (a + b)x + ab, evaluate the fc
(iii) 107 x 93
(ii) 8.2 x 8.7
2 —b2 = (a + b)(a — b), find
- (0.95)2 - (5.7)2
— 5y)2
- 7y)2 = 112xy
1
:e: (i) x2 +
2
x
1
e: (i) x2 + —
2
x
1
uate: (i) x +
x
2
7
i —a —2b
2
2
2
76
(ii)
1
(ii) x4 +
x
1
(ii) x4 +
x
1
(ii) x— —
x
10, find the value of a2 + b2.
52 = 42, find the value of ab.
= 4, find the values of
(ii) a — b
