SOLUTION: I cant figure this one out. Please help. Solve the equation x2 + 8x � 2 = 0 using both a) The quadratic formula b) Completing the square Prepare a few sente

Question 189419: I cant figure this one out. Please help.
Solve the equation x2 + 8x � 2 = 0 using both
a) The quadratic formula
b) Completing the square

Prepare a few sentences comparing and contrasting the two methods
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
b)
:

:
and
:
and
:
a)

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=72 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 0.242640687119285, -8.24264068711928. Here's your graph:

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