Question

use suitabe identities to find the product (x+5)(x+2)​

Answer 1

你好

identity for this is (x+a)(x+b)=x^2+(a+b)*x+a*b

X^2+(5+2)*X+5*2

$x ^{2} + 7x + 10$

HOPE IT HELPS YOU

Answer 2

Answer:

1. using identity = (x+a) (x+b) = x2 + (a+b)x ab
2. x2 (5+2)x 5(2)
3. x2 + 7x + 10