SOLUTION: The length of a reactangle is 5 meters more than twice its width, and the area of the rectangle is 88 meters squared. Find the dimensions of the rectangle.

Question 310500: The length of a reactangle is 5 meters more than twice its width, and the area of the rectangle is 88 meters squared. Find the dimensions of the rectangle.
Answer by JBarnum(2146) (Show Source): You can put this solution on YOUR website!
A=LW
A=88
88=LW
L=5+2W

view below for quadratic formula explanation
has to be positive

Solved by pluggable solver: SOLVE quadratic equation with variable

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=729 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 5.5, -8. Here's your graph:

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