Question

qual as resposta dessas?(por favor ajudem)

Answer 1

Explicação passo-a-passo:

${( \frac{3}{5} )}^{2} = \frac{9}{25}$

$\frac{ {3}^{2} }{2} = \frac{9}{2}$

${( \frac{2}{3}) }^{ - 1} = \frac{3}{2}$

${3}^{ - 1} + \frac{2}{3} = \frac{1}{3} + \frac{2}{3} = \frac{1 + 2}{3} = \frac{3}{3} = 1$

${7}^{ - 2} \times 49 = {7}^{ - 2} \times {7}^{2} = {7}^{ - 2 + 2} = {7}^{0} = 1$