SOLUTION: solve each equation by completing the square. x^2+3x=0

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Question 390493: solve each equation by completing the square.
x^2+3x=0
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Add 9/4 to both sides of the equation:

x%5E2+%2B+3x+%2B+9%2F4+=+9%2F4 The left-hand side factors as %28x+-+3%2F2%29%5E2, so

%28x+-+3%2F2%29%5E2+=+9%2F4

x+-+3%2F2+=+0+%2B-+3%2F2

x = 0 or x = -3