SOLUTION: {x^2-3}=2x graphing to verify your solution

Question 17646: {x^2-3}=2x graphing to verify your solution
Answer by pwac(253) (Show Source): You can put this solution on YOUR website!

(x+1)(x-3)
x+1=0
x=-1
x-3=0
x=3

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=16 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 3, -1. Here's your graph:

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