Question

use suitabe identity to find the product (x + 4) (x+10)

Answer 1

Hii there!!!

(x+4)(x+10) { x^2+(a+b)x+ab}
=x^2+(4+10)x+(4)(10)
=x^2+14x+40 ANS

Hope it helps dear.....

Answer 2

using identity => (x +a)(x+b)=x^2+(a+b)x+ab
a=4 and b=10
= x^2+(4+10)x+4×10
= x^2+14x+40