SOLUTION: 2x2 - 2x - 9 = 0

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Question 882527: 2x2 - 2x - 9 = 0
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
2x^2 - 2x - 9 = 0 format ax^2 + bx + c = 0
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=76 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 2.67944947177034, -1.67944947177034. Here's your graph:
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