Question

factorise the following (a+b)2 -9(a_b)2​

Answer 1

Step-by-step explanation:

(a^2-b^2)(-16) is the correct answer

Answer 2

Answer:

Using the identity a² -b² =(a+b)(a-b)

(a+b)² -(3(a-b))²

(a+b+3(a-b) x(a+b-3(a-b)

(a+b+3a-3b)(a+b-3a+3b)

(4a-2b)(4b-2a)

Step-by-step explanation: