SOLUTION: PLEASE HELP ME!! The area of a rectangle of length x is given by 3x^2 + 5x. Find the width of the rectangle.

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Question 75139: PLEASE HELP ME!!
The area of a rectangle of length x is given by 3x^2 + 5x. Find the
width of the rectangle.
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Since the area is:
we can solve for w

Now lets plug in our values
plug in and L=x
Break up the fraction into two fractions
Divide like terms.

So the width is


Check:
If we multiply L and w we should get A

Plug in values for w and L
So our answer works

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