SOLUTION: if {{{(x-6)^2=64}}} what is the sum of the values of x?

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Question 544125: if %28x-6%29%5E2=64
what is the sum of the values of x?
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
%28x-6%29%5E2=64
%28x-6%29%28x-6%29=64
x%5E2-12x%2B36=64
x%5E2-12x-28=0
x-14%29%28x%2B2%29=0
x-14=0x%2B2=0
x=14x=-2
sum of the x values:
14%2B%28-2%29=highlight%2812%29