# #2sqrt (6a + 7) - 2a = 0? #solve the equation

##### 1 Answer

Apr 18, 2017

#### Answer:

#### Explanation:

Given:

Restrict the domain so that the expression under the radical never becomes negative:

Divide the equation by 2:

Add "a" to both sides:

Square both sides:

Subtract

Factor:

Please notice that I have can discarded the restriction because neither root violates it.

Check:

The negative root must be discarded; it is an erroneous root introduced by squaring.