Answer
$1728$
Work Step by Step
Start with given expression: $(s+t)^3$
Plug in values of $s$ and $t$: $(4+8)^3$
The order of operations states that first we perform operations inside grouping symbols, such as parentheses, brackets, and fraction bars. Then, we simplify powers. Then, we multiply and divide from left to right. Finally, we add and subtract from left to right.
First, we simplify inside parentheses: $12^3$
Finally, we simplify the power: $1728$
