Question

3x^2=147

Answer 1

divide by 3.
then take the sqrt of that

Answer 2

Still confused

Answer 3

3x^2=147 | you have to solve the equation, this means making the value of x obvious.
3x^2/3 = 147 /3 | you divide both terms by 3
x^2 = 49 | now you only have to take out the power (2)
\[\sqrt{x ^{2}} = \sqrt{49}\]
x = 7 | that's the result