Question

1) Simplifiquem​ 2^-3 +3^-2
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Answer 1

${2}^{ - 3} + {3}^{ - 2} = { (\frac{1}{2}) }^{3} + { (\frac{1}{3}) }^{2} = \frac{1}{8} + \frac{1}{9} = \frac{9}{72} + \frac{8}{72} = \frac{9 + 8}{72} = \frac{17}{72}$