SOLUTION: x^2=4-8x

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Question 167203: x^2=4-8x
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
subtracting 4-8x __ x^2+8x-4=0 __ this is not factorable

adding 4 __ x^+8x=4 __ completing the square by adding (8/2)^2 __ x^2+8x+16=20

taking square root __ x+4=ħsqrt(20) __ x=-4 ħ 2(sqrt(5))