Question

What's the identity means by
(x+a) (x+b)

Answer 1

Answer:x^2+(a+b)x+ab

Step-by-step explanation:

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

For example-

(2+1)(2+3)=2^2+(1+3)2+(1)(3)

=4+8+3

=15