SOLUTION: I have tried to solve this equation using the quadratic formula but I end up with 4 sqrt 8 / 2 instead of 2 / sqrt 2 . the equation is x^2 - 4x + 2 = 0

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Question 483378: I have tried to solve this equation using the quadratic formula but I end up with 4 sqrt 8 / 2 instead of 2 / sqrt 2 . the equation is x^2 - 4x + 2 = 0
Answer by jorel1380(3719)   (Show Source): You can put this solution on YOUR website!
x^2 - 4x + 2 = 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=8 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 3.41421356237309, 0.585786437626905. Here's your graph:
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