Using the on$-$screen palette and$/$or your keyboard, enter the expressions you see on the left into the input boxes on the right. Press Enter or Tab after each answer to check the syntax.

NOTE: You can type $\text{'}/\text{'},\text{'}$pi$\text{'},$ and $\text{'}{?}^{{?}^{?}}\text{'}$ if you prefer to use the keyboard.

An invalid input will show a dashed red input box.

$\frac{4}{3}{r}^3$

$P(1+\frac{x}{5}{)}^t$