Question

expand the following using suitable identities (x+3)(x+7)​

Answer 1

Answer:

x² + 10x + 21

Step-by-step explanation:

(x+3)(x+7)

by using

(x+a)(x+b) = x²+(a+b)x+ab

(x+3)(x+7) = x² + (3 + 7)x + (3 x 7)

                = x² + 10x + 21

hope this helps you dear..

               

Answer 2

Answer:

I think the answer is x²+10x+21