SOLUTION: use the quadratic formula to find the x-intercepts. g(x)=x^2-2x-80.

Question 294676: use the quadratic formula to find the x-intercepts. g(x)=x^2-2x-80.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
It is much easier to factor.
y = (x-10) (x+8)

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=324 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 10, -8. Here's your graph:

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