Question

Factorise the following: 3 - 5a - 5b - 12 ( a + b )^2

Answer 1

Answer:

(1−3a−3b)(3+4a+4b)

Step-by-step explanation:

3−5a−5b−12(a+b)^2

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)