SOLUTION: solve for r r^2+3r=6 type an exact answer using radicals as needed

Question 353839: solve for r
r^2+3r=6
type an exact answer using radicals as needed
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
solve for r
r^2+3r=6

Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc)

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=33 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 1.37228132326901, -4.37228132326901. Here's your graph:

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r = x

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