Explicación paso a paso:
[tex]1)\: {( - 3)}^{2} - ( { - 2)}^{2} = 9 - 4 = 5 \\ \\ \: \: \: \: \: 2) {( - 5)}^{3} + {( - 7)}^{2} = - 125 + 49 \\ = - 76[/tex]
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Explicación paso a paso:
[tex]1)\: {( - 3)}^{2} - ( { - 2)}^{2} = 9 - 4 = 5 \\ \\ \: \: \: \: \: 2) {( - 5)}^{3} + {( - 7)}^{2} = - 125 + 49 \\ = - 76[/tex]