SOLUTION: The width of a rectangle is 3 less than twice its length. If the area of the rectangle is 87 cm^2, what is the length of the diagonal?

Question 962483: The width of a rectangle is 3 less than twice its length. If the area of the rectangle is 87 cm^2, what is the length of the diagonal?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
w=-3+2L and wL=87 using w for width and L for length. The question is to find .

That discriminant is 15*47, so no further simplifications.

Your choice if you want to handle everything in radical form or to put into decimal base-ten number form. You want something like or equivalent to

and then

Decimalized base-ten form would be easier.
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