The perimeter of a rectangle is 26x + 6, and its area is 30x^2 - 12x - 18. Find the dimensions of the rectangle.
30x^2-12x-18 factors to
(30x - 30)(x+.6) = 0
x = 10 or -.6 (throw out)
for x = 10 2L + 2W = 266 L+W = 133 W = 133-L
L*W = 2862 subbing in W = 133-L
Yields 27 and 106 via Quadratic Formula
Dimensions = 27 x 106 units