SOLUTION: Solve the following equations for x using any method. 1) {{{ x^2-4x=2}}} Also for the equation: 2) {{{ abs(5-x)-4=2}}} would the correct answer be x=-1 or x=11?

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Question 623799: Solve the following equations for x using any method.
1)
Also for the equation:
2)
would the correct answer be x=-1 or x=11?

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
Solve the following equations for x using any method.
1)
Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc)
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:

==============
Also for the equation:
2)
would the correct answer be x=-1 or x=11?
2)
|x-5| = 6
x = 11
x = -1
is right.

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