SOLUTION: I'm having trouble finding the answer solve: 2x^2 + 2x +10=0

Question 1085278: I'm having trouble finding the answer
solve: 2x^2 + 2x +10=0
Found 2 solutions by rothauserc, Alan3354:
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
2x^2 + 2x +10 = 0
:
divide both sides of = by 2
:
x^2 +x +5 = 0
:
solve by completing the square
:
x^2 +x + 1/4 = -5 + 1/4
:
(x + 1/2)^2 = -19/4
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take square root of both sides of =
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x + 1/2 = square root(-19/4)
:
the solution is two complex numbers
:
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x = -i/2 * (square root(19) - i)
x = i/2 * (square root(19) + i)
:
note i = square root(-1) and i^2 = -1
:
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:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
solve: 2x^2 + 2x +10=0
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I would use the quadratic equation.
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Completing the square works, too.
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