Answer:

Step-by-step explanation:
Equation Given:

Solution:-
<u>Square both sides and remove square root:</u>


<u>Subtract x^2+6x+9 from both sides :</u>



<u>Factor LHS of the equation:</u>

<u>Put factors = to 0:</u>



<u>Let's check.</u>
First x=3 :
<u>Put the values on the given Equation According to the question to verify:</u>


![\sf \longmapsto \sqrt{36[6×6]} = 6](https://tex.z-dn.net/?f=%5Csf%20%5Clongmapsto%20%5Csqrt%7B36%5B6%C3%976%5D%7D%20%20%3D%206)
(True)
Hence, this equation is true when x = 3.
Now x=-4:
<u>Put the values on the given Equation According to the question to verify:</u>



(False)
The equation is false when x = -4 is plugged, so the actual answer will be <u><em>x =</em> <em>3</em></u> where the equation comes true after putting the values.
______________________________________
I hope this helps!