Question

Can someone help me with Radicals?

Answer 1

\[4\sqrt{x-5-8=12}\]

Answer 2

i think you are starting with
\[4\sqrt{x-5}-8=12\] add 8 to both sides gives
\[4\sqrt{x-5}=20\] divide by 4 to get
\[\sqrt{x-5}=5\] square both sides get
\[x-5=25\] one more step

Answer 3

That means the final answer is 20, correct?