SOLUTION: solve 3x2+11x=20

Question 18714: solve 3x2+11x=20
Answer by Alwayscheerful(414) (Show Source): You can put this solution on YOUR website!
Move the 20 over to the left side so it is a quadratic equation.

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=361 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 1.33333333333333, -5. Here's your graph:

Hope this helps!
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