# CBSE Class 9 Answered

**factorize**

Asked by nmenghani | 03 Apr, 2010, 10:15: PM

Expert Answer

1. 12(3x-2y)^{2}-3x+24-1 pls check this it must be 2y

2. a^{6}-26a^{3}-27 = a^{6}-27a^{3}+a^{3}-27 = (a^{3}+1)(a^{3}-27)

3.5a^{2}-b^{2}-4ab+7a-7b = 5a^{2 }- 5ab+ab - b^{2 }+ 7(a-b)

= 5a(a-b)+b(a-b) +7(a-b)

= (5a+b)(a-b)+7(a-b)

= (a-b)(5a+b+7)

do the remaining similarly

Answered by | 05 Apr, 2010, 10:02: AM

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