Question
If $m = 9$ and $n = − 2,$ evaluate $(2n)^3$
✓
Answer
$(2n)^3$
$= (2 \times n) \times (2 \times n) \times (2 \times n)$
$= (2 \times (− 2)) \times (2 \times (− 2)) \times (2 \times (− 2))$
$= (− 4) \times (− 4) \times (− 4)$
$= − 64$
$= (2 \times n) \times (2 \times n) \times (2 \times n)$
$= (2 \times (− 2)) \times (2 \times (− 2)) \times (2 \times (− 2))$
$= (− 4) \times (− 4) \times (− 4)$
$= − 64$
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