Question

Use suitable identity to find ( 2x +1 ) (2x -4).​

Answer 1

Answer:

We know that

(x+a) (x-b) =x^2-x(a-b) ab

So, we put the

Step-by-step explanation:

given equation in the suitable identity,

=(2x)^2-2x(1-4) (1x-4)

=4x^2+8x x -4

=4x^2+16x

HOPE YOU GET YOUR ANSWER

Answer 2

Answer:

Step-by-step explanation:

Using identity- (x+a)(x+b) = x^2+(a+b)x+ ab

(2x+1)[2x+(-4)]=(2x)^2+[1+(-4)]2x+1×(-4)

=4x^2-6x-4.