Question

3times square root of x equals x. Please help me to solve this, step by step. i know it's easy. i just forgot how to do

Answer 1

Let's start by cleaning this up:

\[3(\sqrt{x})=x\]

Square each side to produce:

\[9x=x ^{2}\]

Then move them both to the same side, factor out an x and are left with:

x(9-x)=0

At that point, x =0 or x= 9.

Answer 2

thank you so much! see, i knew it, but just forgot :D