Solve the equation by completing the square. Round to the nearest hundredth if necessary.
x? +2x=8
(1 point)
To solve by completing the square, we first need to move the constant term to the other side of the equation:
x^2 + 2x = 8
x^2 + 2x + 1 = 8 + 1
(x + 1)^2 = 9
Now, we take the square root of both sides:
x + 1 = ±√9
x + 1 = ±3
Now solve for x:
x + 1 = 3 or x + 1 = -3
x = 3 - 1 or x = -3 - 1
x = 2 or x = -4
Therefore, the solutions are x = 2 and x = -4.