The answer is 10 ft and 15 ft.
The area of the rectangle (A) is the product of its length (l) and width (w):
A = l * w
A = 150 ft²
2x² - 5x = 150
x * 2x - x * 5 = 150
x(2x - 5) = 150
So, x is one side, and 2x - 5 is another side.
Therefore, one side will be: 10
and another side will be; 2 * 10 - 5 = 20 - 5 = 15
Dimensions of the rectangle are 10 ft and 15 ft.