Question

The height of a parallelogram is 10 feet more than its base. If the area of the parallelogram is 120 square feet, find it's base and height.

Answer 1

base --- x 
height --- x+10 
x(x+10) = 120 
x^2 + 10x - 120 = 0 
(x+12)(x-2) = 0 
x = -12 or  

base is 12, height is 2