Question

One side of a rectangle is X+7 units long, and the other side is X+3 units long. Express the area of the rectangle as a polynomial. If the value of X is 10, what is the value of the Polynomial?

Answer 1

area as a polynomial: x^2 + 10x +21

If the value is 10: 221 units square

Explanation:

to solve for the polynomial just do (x+7)(x+3) use the box method if your unfamiliar with this

to solve for the value just plug it in the polynomial you got from the previous answer

hope this helps