If you have $\displaystyle (AL)^{-1} \left[ (AL)^\frac{1}{2} + BK^\frac{1}{2} \right]^2$, is there a way to sneak the $\displaystyle (AL)^{-1}$ into the brackets? Expanding the brackets wouldn't be the end of the world, but it would be nice to know of a better way. It would be especially useful if I ever come across a situation like $\displaystyle (AL)^{-1} \left[ (AL)^\frac{1}{2} + BK^\frac{1}{2} \right]^4$