Question

A rectangle has a height of 7x2 and a width of 3x2 + 8x + 7.

Express the area of the entire rectangle.
Your answer should be a polynomial in standard form.
7x²
Area =
3x²
+
8x
+ 7

Answer 1

`21x^4+56x^3+49x^2`

Explanation:

`A=hw \\ \\ =(7x^2)(3x^2+8x+7) \\ \\ =21x^4+56x^3+49x^2`