Question

Find the following products by using suitable identities:
(a)(x + 5) (x-7)​

Answer 1

Step-by-step explanation:

By using:

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

= (x+5) (x-7)

= x^2 + (5-7)x -(5)(7)

= x^2 + 2x -35

Hope it helps you...