(36x)^1/2 × (49x)^1/2
**You have to simplify**
_x
\((36x)^{\frac12}*(49x)^{\frac12} \\~\\ =36^{\frac12}*x^{\frac12}*49^{\frac12}*x^{\frac12} \\~\\ =\sqrt{36}*\sqrt{x}*\sqrt{49}*\sqrt{x} \\~\\ =6*\sqrt{x}*7*\sqrt{x} \\~\\ =6*7*\sqrt{x}*\sqrt{x} \\~\\ =42*\sqrt{x}^2 \\~\\ =42x \)
