Question

The length and width of a rectangle are shown below.

Answer 1

Answer:

-2x² + 90x + 500

Step-by-step explanation:

Use FOIL method

Area of rectangle = length * width

                             = (50 - x)(2x + 10)

                             = 50*(2x) + 50*10 + (-x)*2x + (-x)*10

                             = 100x + 500 - 2x² - 10x

                             = -2x² + 100x - 10x + 500  {Combine like terms}

                            = -2x² + 90x + 500