Question

Multiply & (a)(3pq, - 4p²+ 5q²+7) by 7pq.
(b) (3/4 x^2y -4/5 xy+ 5/6xy^2) by 15xyz
2. If x + 1/ x 5, evaluate (a) x² + 1/x^2 (b) x^4+1/x^4
3. If a+b= 5 and a^2 + b^2= 13, find ab.
4. Prove that (a) (2a+3b)^2 =8a^2+18b^2
(b) (a+b)^2= (a-b )^2 +4ab
5. Divide - (a) lox^4 - 19x^3+ 17x² +15x-42 by 2x^2 -3x+5

(b) x^3-6x^2 + 12x - 8 by x-2
6. using identity . (x+a)(x+b)=x^2+(a+b)x+ ab.
(a) (p^2+2p) (p^2-3q) (b) (abc+3) (abc-5)
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Answer 1

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