\[\left( 36^{\frac{1}{4}} - 5^{\frac{1}{2}} \right)\left( 36^{\frac{1}{4}} + 5^{\frac{1}{2}} \right) =\]
\[= \left( 36^{\frac{1}{4}} \right)^{2} - \left( 5^{\frac{1}{2}} \right)^{2} = \left( 6^{2} \right)^{\frac{1}{2}} - 5 =\]
\[= 6 - 5 = 1\]