SOLUTION: y=x(squared)-2x-5

Question 169247: y=x(squared)-2x-5
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
y=x(squared)-2x-5
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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=24 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 3.44948974278318, -1.44948974278318. Here's your graph:

The zeroes are:
1+sqrt(6)
1-sqrt(6)

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