# How do you solve using the completing the square method #x^2 +8x = 7#?

##### 1 Answer

Mar 20, 2016

#### Answer:

Add

#x = -4+-sqrt(23)#

#### Explanation:

One way is as follows:

First add

#x^2+8x+16 = 23#

Note that

#(x+4)^2 = 23#

Therefore:

#x+4 = +-sqrt(23)#

Hence:

#x = -4+-sqrt(23)#