# How do you solve by completing the square #x^2+2x-5=0#?

##### 1 Answer

Jun 30, 2015

Force a perfect square trinomial on the left side. Take the square root of both sides. Solve for

#### Explanation:

Completing the square involves forcing a perfect square trinomial on the left side of the equation, then solving for

The form for a perfect square is

Add

Divide the coefficient of the

Add the result to both sides.

The left side is now a perfect square trinomial.

Take the square root on both sides.

Subtract