Question
$(-3)^2 \times(-1)^{2017}= ........$
✓
Answer
$(-3)^2 \times(-1)^{2017}$
$=(-3) \times(-3) \times(-1) \{\because 2017$ is odd $\}$
$=9 \times(-1)=-9$
$=(-3) \times(-3) \times(-1) \{\because 2017$ is odd $\}$
$=9 \times(-1)=-9$
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