Question

What is the product of $(a+b)$ and $7a^2$$b^2$?

• A. 7
• B. 7 + 7
• C. 7b + 7a
• D. 7ab + 7

Answer 1

The correct option is B

7 + 7

$7a^2{b}^2(a+b)$

= ($7a^2$$b^2\times a$) + ($7a^2{b}^2\times b$)

= $7a^3{b}^2+7a^2{b}^3$