SOLUTION: 2x^2-x=-9

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Question 191862: 2x^2-x=-9
Answer by orca(409) About Me  (Show Source):
You can put this solution on YOUR website!
Note that this equation has no real solution.
It can be solved by using the quadratic formula:
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
First write it in standard form
2x%5E2-x%2B9=0
Next substitute a = 2, b = -1 and c = 9 into the formula.
x+=+%28-%28-1%29+%2B-+sqrt%28+%28-1%29%5E2-4%2A2%2A9+%29%29%2F%282%2A2%29+
x+=+%281+%2B-+sqrt%28+1-72+%29%29%2F4+
x+=+%281+%2B-+sqrt%28-71%29%29%2F4+
x+=+%281+%2B-+sqrt%2871%29i%29%2F4+