SOLUTION: Solve by completing the square. x2 + 2x � 15 = 0

Question 49409: Solve by completing the square.
x2 + 2x � 15 = 0

Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Solve by completing the square:
First, add 15 to both sides of the equation.

Since the coefficient of the term is 1, you can complete the square by adding the square of half the coefficient of the x-term, which is: , to both sides of the equation.
Now factor the left sides of the equation.
Next, take the square root of both sides.
and Finally, solve for x.

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