Question

$2 \frac{?}$
alguém me ajuda a saber a atividade​

Answer 1

A)

$\frac{ {2}^{0} + {2}^{1} }{3 - 2}$

$\frac{1 + 2}{1}$

$\frac{3}{1}$

$\boxed{\red{3}}$

B)

$( \frac{1}{2} ) ^{ - 1} + (\frac{1}{2} ) ^{ - 2}$

$\frac{2}{1} + ( \frac{2}{1} ) ^{2}$

$2 + \frac{4}{1}$

$2 + 4$

$\boxed{\red{6}}$

C)

${1}^{3} + ( - 2) ^{4} - ( - 2) ^{3} + {4}^{0} + 2 \times {2}^{ - 3} + {1}^{4}$

$1 + 16 - ( - 8) + 1 + 2 \times ( \frac{1}{2} ) ^{3} + 1$

$18 + 8 + 2 \times \frac{1}{8} + 1$

$27 + \frac{1}{4}$

$\frac{27 + 1}{4}$

$\frac{28}{4}$

$\boxed{\red{7}}$

D)

$( - 2) + ( - 3) \times ( - 2) ^{ - 1} \div ( - 3)$

$- 2 - 3 \times \frac{1}{2} \div( - 3)$

$- 2 - 3 \times \frac{1}{2} \times \frac{1}{ - 3}$

$- 2 - 3 \times \frac{1}{ - 6}$

$- 2 \times \frac{1}{2}$

$- 1 \times 1$

$\boxed{\red{ - 1}}$

Espero ter ajudado!