Question

explain the identity (x+a) (x+b) = x2 (X to the power 2)+(a+b)*x+ab

Answer 1

(x+a)(x+b)=x(x+b)+a(x+b)
=x×x+bx+ax+ab
=x²+ax+bx+ab
=x²+(a+b)x+ab
hence proved
please mark it as brailiest