SOLUTION: graph: y = x squared - 4x

SOLUTION: graph: y = x squared - 4x - 3

Question 167602: graph: y = x squared - 4x - 3
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
graph: y = x squared - 4x - 3
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OK

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=28 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 4.64575131106459, -0.645751311064591. Here's your graph:

To be more clear, the solutions are:
and

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