Question

A rectangle has a height of 7x^2 and a width of 3x^2+8x+7.

Express the area of the entire rectangle.

Answer 1

Answer: 21x^4 + 56x^3 + 49x^2
Explanation:
area of rectangle= height x width
7x^2(3x^2+8x+7)
= 21x^4 + 56x^3 + 49x^2

Answer 2

Explanation:

Area of the rectangle = height * width

= 7x² * (3x² + 8x + 7)

= 7x² * 3x² + 7x² * 8x + 7x² * 7

= 21x⁴ + 56x³ + 49x²