If you expand the square, you have

Simplify the right hand side:

Cancel the -3x appearing on both sides:

Multiply both sides by 4:

Consider the square root of both terms (using the doubles sign):

The answer to the question is 43
Answer:
x=3h+k/a-3
Step-by-step explanation:
Attached is the solution. I hope this helps you!!
The GCF is 5x because 5x goes into all the sets.