SOLUTION: x^2 - 4x = 2 (solve by completing the square method)

Question 301419: x^2 - 4x = 2 (solve by completing the square method)
Answer by JBarnum(2146) (Show Source): You can put this solution on YOUR website!

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=24 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 4.44948974278318, -0.449489742783178. Here's your graph:

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