I hope the given equation is :
[tex] \sqrt{x+2} -15 =-3 [/tex]
First step to solve the above equation is to add 15 to each sides of the equation. Therefore,
[tex] \sqrt{x+2} -15+15 =-3+15 [/tex]
[tex] \sqrt{x+2} =12 [/tex]
Next step is to remove square root from the left side, so let's square on each sides of the equation. So,
x + 2= 12²
x + 2 = 144
x = 144 - 2
So, x = 142
So, a is the correct choice.
Hope this helps you!
