SOLUTION: Solve: x^2 + 18x - 4 = 0

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Question 317615: Solve: x^2 + 18x - 4 = 0
Answer by checkley77(12844) About Me  (Show Source):
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x^2 + 18x - 4 = 0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x=(-18+-sqrt[18^2-4*1-4])/2*1
x=(-18+-sqrt[324+16])/2
x=(-18+-sqrt340/2
x=(-18+-18.439)/2
x=(-18+18.439)/2
x=.439/2
x=.22 ans.
x=(-18-18.439)/3
x=-36.439/2
x=-18.22 ans.