Question

(2a+b)^2-6a-3b-4. factorise​

Answer 1

(2a+b)²-6a-3b-4

(2a+b)²-3(2a+b)-4

Assume 2a+b = x ..... (1)

x²-3x-4

x²-4x+x-4

x(x-4)+1(x-4)

(x+1)(x-4)

(2a+b+1) (2a+b-4) [From (1) x= 2a+b ]