Question

The length of a rectangle is three centimeters less than the width. If the area of the rectangle is 54cm2, find the

dimensions of the rectangle.​

Answer 1

w = 9, l = 6

Explanation:

w=x

l=x-3

A = lw

54 = x(x-3)

54 = x^2-3x

0 = x^2-3x-54

0 = (x+6)(x-9)

x+6 = 0

x-9 = 0

x=-6, 9

x cannot be negative, x = 9