Write a simplified polynomial expression to represent the area of the rectangle

with a x + 5 on the right side and a 2x - 4 on the bottom.

Question

Mathematics

Karsyn Marshall

3 February, 05:23

Write a simplified polynomial expression to represent the area of the rectangle

with a x + 5 on the right side and a 2x - 4 on the bottom.

+2

Answers (1)

Know the Answer?

Alanna Herring · Answer 1

The answer is A = 2x² + 6x - 20

The area of the rectangle is:

A = l * w

l = x + 5

w = 2x - 4

A = (x + 5) (2x - 4)

Use the distributive property to calculate this:

A = (x + 5) (2x - 4)

A = x * 2x + x * (-4) + 5 * 2x + 5 * (-4)

A = 2x² - 4x + 10x - 20

A = 2x² + 6x - 20

Write a simplified polynomial expression to represent the area of the rectanglewith a x + 5 on the right side and a 2x - 4 on the bottom.

Write a simplified polynomial expression to represent the area of the rectangle

with a x + 5 on the right side and a 2x - 4 on the bottom.