Question

Factorise the following:

3 - 5a - 5b -12 (a+b)²

Answer 1

Answer: (1−3a−3b)(3+4a+4b)

Step-by-step explanation:

Above terms can be written as,

3−5(a+b)−12(a+b)^2

3−9(a+b)+4(a+b)−12(a+b)  ^2

Take out common in all terms we get,

3(1−3(a+b))+4(a+b)(1−3(a+b))

(1−3(a+b))(3+4(a+b))

(1−3a−3b)(3+4a+4b)

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