# Question #3b81a

##### 1 Answer

Alright, let's re-write the first problem.

Okay, we have a quadratic equation. The purpose of "completing the square" is to add a constant to both sides of the equation so that we can turn the left side into some form of

Let's go step by step.

First, take the half of the

Second, square it.

Third, add that result to both sides of the equation.

Notice anything about the left side of the equation? It can be simplified into a form like

which is much easier to solve than what we had originally.

note the two answers.

I won't go over the other three questions because now that you know how to do complete the square, they should come really easily! Good luck!