Question

A rectangle has side lengths 2x + 3 and 5x - 2.

Write an expression without brackets for the area of the rectangle

Answer 1

10x² + 11x - 6

Explanation:

The area (A) is the product of the sides, that is

A = (2x + 3)(5x - 2) ← expand using FOIL

= 10x² - 4x + 15x - 6 ← collect like terms

= 10x² + 11x - 6