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

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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: