solved solutions for exemplar problems class9 maths exercise 1.3,1.4,2.3,2.4

The polynomial

p(x) =x4 2x3+ 3x2ax+ 3a 7 when divided byx+ 1 leavesthe remainder 19. Find the values ofa. Also find the remainder whenp(x)isdivided byx+ 2.
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PQR is a Isosceles triangle, PQ = PR = 25 cm, QR = 14 cm inscribed in a circle. find the length of the radius
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10cm
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What all important chapters were there for grade 8 ? 
 
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