# How do you solve #u^2-4u=2u+35# by completing the square?

##### 1 Answer

Feb 20, 2017

#### Answer:

#### Explanation:

First, subtract

Now find

Now, complete the square by adding both sides by 9.

Rewrite the left side:

Solve for u. Remember that taking the square root of both sides will give you a positive and negative number.