Question

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6. (i) x(x + 3) +5(x + 3) (ii) 5x(x-4) - 7(x-4) (ii) 2m(l - n) + 3(1-n)
7. 6ala - 2b) +5bla - 2b) 8. x® (2a - b) + x2 (2a -b) 99a(3a-5b) -12a (3a-5b)
10. (x + 5)2 - 4(x + 5)
11. 3(a - 2b)2 - 5(a - 2b) 12. 2a +6b - 3(a + 3b)
13. 16(2p - 3q)- 4(2 -3) 14. xla - 3) + y(3 - a) 15. 12(2x - 3y)? - 16(3y - 2x)
16. (x+y)(2x + 5) - (x + y)(x+3) 17. ar + br + at + bt
18. x? -ax-bx + ab
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Answer 1

6. i). x(x+3)+5(x+3) = x2+3x+5x+15

= x2+8x+15

ii). 5x(x-4)-7(x-4) = 5x2-20x-7x+28

=5x2 - 27x+28

iii). 2m(l-n)+3(1-n) = 2lm-2mn+3-3n