Question

square root 72x^2

Answer 1

\[6x* \sqrt{2}\]

Answer 2

glitter, you can easily put up √.

press ALT and HOLD it.
click 2 5 1 (on the right of the keyboard, don't use numbers below F1, F2, F3...)
release ALT

Answer 3

72=2*2*2*3*3 and x^2=x*x
\[\sqrt{72}=\pm \sqrt{2*2*2*3*3}=\pm6\sqrt{2}\]
and \[\sqrt{x ^{2}}=\pm x\]
\[\sqrt{72}*x ^{2}=\pm6\sqrt{2}x \]