Question

Factorise the following : 12(a + b)2 – 5(a + b) – 3​

Answer 1

Answer:

abcdefghijklmnopqrstuvwxyz.

Answer 2

Answer:

8a3−b3−12a2b+6ab2

=(2a)3+(−b)3+3(2a)2(−b)+2(2a)(−b)2

 Suitable identities isx3−y3−3x2y+3xy2=(x−y)3

∴(2a)3+(−b)3+3(2a)2(−b)+2(2a)(−b)2

=(2a−b)3