The area of a rectangle is 4800cm ^ 2, and its length is 20cm more than its width Find the length and width of the rectangle

The area of a rectangle is 4800cm ^ 2, and its length is 20cm more than its width Find the length and width of the rectangle

Let length x be width x-20
x(x-20)=4800
x^2-20x-4800=0
(x-80)(x+60)=0
X1 = 80, X2 = - 60
So it's 80cm long
Width 80-20 = 60cm