SOLUTION: Please solve following quadratic equations using method completing the square: x^2 + x = -1

Question 15483: Please solve following quadratic equations using method completing the square:
x^2 + x = -1
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Solve by completing the square:
Complete the square in the x-terms by adding the square of half the coefficient of the x-term to both sides. This means adding to both sides.
Factor the left side.
Take the square root of both sides.
Subtract from both sides.
Simplify.

and/or
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