SOLUTION: Complete the square. x^2 + 15x= 5

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Question 482789: Complete the square. x^2 + 15x= 5
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Take 1/2 of the coefficient of the x term,
then square it, then add it to both sides
+x%5E2+%2B+15x+%2B+%2815%2F2%29%5E2+=+5+%2B+%2815%2F2%29%5E2+
+x%5E2+%2B+15x+%2B+225%2F4+=+20%2F4+%2B+225%2F4+
+%28+x+%2B+15%2F2+%29%5E2+=+245%2F4+
Take the square root of both sides
+x+%2B+15%2F2+=+sqrt%28245%29%2F2+
+x+=+%28+-15+%2B-+sqrt%28245%29%29+%2F+2+