Question

I am having a difficult time with Radical Equations. Here is one of the problems: 4 square root x) +7 = 23. If someone could show me step by step how to do these types of problems I would be grateful. :3

Answer 1

\[4\sqrt{x} +7 = 23\]
subtract 7
\[4\sqrt{x} = 16\]
divide 4
\[\sqrt{x} = 4\]
square both sides
\[(\sqrt{x})^{2} = 4^{2}\]
squaring cancels out a square root
\[x = 16\]

Answer 2

Thank you so much :D This helped a bunch <3