algebra
posted by lisa on .
The width of a rectangle is 3ft less than the lenght. The area is 4ft^2. Find the lenght and the width

ahh, you fixed it, but surely you should have been able to do this easy question.
length  x
width  x3
x(x3) = 4
x^2  3x  4 = 0
(x4)(x+1) = 0
x = 4, or x = 1, the last part is a silly answer
length = 4
width = 1