Factorisation6. (i) 6x2 + 11x - 10(ii) 5 - 4x - 12x2(ii) 12x2 - x - 35

1.	Factorisation6. (i) 6x2 + 11x - 10(ii) 5 - 4x - 12x2(ii) 12x2 - x - 35(ii) 3x2 - 5xy - 12y2(ii) 10p2q2 - 21pq + 9(ii) x(12x + 7) - 105. (1) 14x2 – 23x + 87. (1) 1 - 18y - 63y28. (1) x2 – 3xy - 40y29. (1) 2a2b2 + ab - 45[Hint. (ii) x(12x + 7) - 10 = 12x2 + 7x - 1)10. (1) (a + b)2 – 11(a + b) – 4211. (i) (x - 2y)2 – 6(x – 2y) + 5(ii) 8 + 6(p+q) - 5(p+q)2(ii) 7 + 10(2x – 3y) - 8(2x - 3y)2
Answer» Answer: 6 (1) X= -5/2or x= 2/3 (2) x= -5/6or x= 1/2

Factorisation6. (i) 6x2 + 11x - 10(ii) 5 - 4x - 12x2(ii) 12x2 - x - 35(ii) 3x2 - 5xy - 12y2(ii) 10p2q2 - 21pq + 9(ii) x(12x + 7) - 105. (1) 14x2 – 23x + 87. (1) 1 - 18y - 63y28. (1) x2 – 3xy - 40y29. (1) 2a2b2 + ab - 45[Hint. (ii) x(12x + 7) - 10 = 12x2 + 7x - 1)10. (1) (a + b)2 – 11(a + b) – 4211. (i) (x - 2y)2 – 6(x – 2y) + 5(ii) 8 + 6(p+q) - 5(p+q)2(ii) 7 + 10(2x – 3y) - 8(2x - 3y)2

Answer»

Answer:

6 (1) X= -5/2or x= 2/3

(2) x= -5/6or x= 1/2

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