SOLUTION: determine the roots of f(x)=-2x^2-6x+13 if possible

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Question 831169: determine the roots of f(x)=-2x^2-6x+13 if possible
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Use the quadratic formula,
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x+=+%28-%28-6%29+%2B-+sqrt%28+%28-6%29%5E2-4%2A%28-2%29%2A13+%29%29%2F%282%2A%28-2%29%29+
x+=+%286+%2B-+sqrt%28+%2836%2B104+%29%29%29%2F%28-4%29+
x+=+%286+%2B-+sqrt%28+%28140+%29%29%29%2F%28-4%29+
x+=+%286+%2B-+2%2Asqrt%28+%2835+%29%29%29%2F%28-4%29+
x+=+%283+%2B-+sqrt%28+%2835+%29%29%29%2F%28-2%29+