SOLUTION: X²+8x+1=0

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Question 684891: X²+8x+1=0
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
Complete the square or use the quadratic formula
x%5E2+%2B+8x+%2B+16+=+-1+%2B+16
%28x%2B4%29%5E2+=+15
sqrt%28x%2B4%29%5E2 = +/- sqrt%2815%29
x+4 = +/- sqrt%2815%29
x=-4%2B-sqrt%2815%29
so
x = -4%2Bsqrt%2815%29
AND
x = -4-sqrt%2815%29
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