SOLUTION: Find the roots of the quadratic equation x2 − 18x + 18 = 0 .

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Question 272571: Find the roots of the quadratic equation x2 − 18x + 18 = 0 .
Answer by oberobic(2304)   (Show Source): You can put this solution on YOUR website!
x^2 - 18x + 18 = 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=252 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 16.9372539331938, 1.06274606680623. Here's your graph:
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