# How do you solve #x =sqrt { -3x+40}# and find any extraneous solutions?

##### 1 Answer

Jan 24, 2017

#### Answer:

x=5, -8

#### Explanation:

Square both sides to have

Or,

This can be factorised as (x+8)(x-5)=0

Solution is therefore x=5 , -8

There are no extraneous solution