$\displaystyle \left(7 \cdot 5\right)^{ \frac{1}{2} }$\displaystyle \left(7 \cdot 5\right)^{ \frac{1}{2} }

$\displaystyle 5^{ \frac{1}{2} }$\displaystyle 5^{ \frac{1}{2} }

$7$7

$\displaystyle 7 \cdot 5^{ \frac{1}{2} }$\displaystyle 7 \cdot 5^{ \frac{1}{2} }