Question 787154: The area of a rectangle is 70 square inches. The length of the rectangle is 3 inches longer than the width. Answer by Cromlix(4381) (Show Source):
You can put this solution on YOUR website! Width = x
Length = x + 3
Area = width * length
70 = x * (x + 3)
x^2 + 3x = 70
x^2 + 3x - 70 = 0
(x - 7)(x + 10) = 0
x + 10 = 0
x = -10 (no answer as x < 0)
x - 7 = 0
x = 7
Width = 7 inches
Length = 10 inches
Hope this helps.
:-)
