SOLUTION: Y=-x^2-4x-7

Question 982215: Y=-x^2-4x-7
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
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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=44 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 5.3166247903554, -1.3166247903554. Here's your graph:

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