SOLUTION: all our teacher gave us is a worksheet and it says "Sove each equation. Check your solution." here is one of many problems: xsquared + 10x + 9 = 0. please and thank you.

Question 21995: all our teacher gave us is a worksheet and it says "Sove each equation. Check your solution." here is one of many problems: xsquared + 10x + 9 = 0. please and thank you.
Answer by Alwayscheerful(414) (Show Source): You can put this solution on YOUR website!

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=64 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: -1, -9. Here's your graph:

Hope this helps!
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