Question

If the area of the rectangle is 39 squared inches
find the value of x

Answer 1

x = 5 inches

Step-by-step explanation:

Given that,

The area of a rectangle = 39 inch²

The sides of the rectangle are (x-2) and (x+8).

The area of a rectangle is given by :

A = lb

So,

`39=(x-2)(x+8)\\\\x^2+8x-2x-16=39\\\\x^2+8x-2x=55\\\\x=5\ in\ and\ x=-11\ in`

So, the value of x is equal to 5 inches.