Question

Evaluate the following by using suitable identity:

(5x/2 - 7) (5x/2 - 7)

Answer 1

we could also write it
(5x)2-7)^2
by using the identity
(a-b)^2 = a^2+b^2-2ab
(5x/2-7)^2 = (5x/2)^2+7^2-2(5x/2)(7)
= 25x^2/4+49-70x/2
.... it will help you
♥️♥️♥️

Answer 2

Answer:

-24

Step-by-step explanation:

• (a+b) (a-b) =(a^2-b^2)