Question

factorise these polynomials​

Answer 1

Answer:

(3a - 1)(3a - 1) - 2(3a - 1)

(3a - 1 - 2)(3a - 1)

(3a - 3)(3a - 1)

= 3(a - 1)(3a - 1)

Answer 2

Use expansion formula of (a-b)^2 it will become quadratic and then you can factorise it with breaking the middle term