Question

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Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

$({3}^{ - 2} - {3}^{ - 3} ) \times ({3}^{0} + {3}^{ - 1} ) \\ \\ \\ {3}^{0} - {3}^{2} - {3}^{0} - {3}^{3} \\ \\ \\ = - {3}^{2} - {3}^{3} \\ \\ = 9 - 27 \\ \\ \\ = - 18$

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