Question

$1 \div 4 \times 2 { - }^{2}$
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Answer 1

$1 \div 4 \times 2 ^{ - 2} = \\ \ = \frac{1}{4} \times ( \frac{1}{2} ) ^{2} \\ = \frac{1}{4} \times \frac{1}{4} = \frac{1}{16}$

Answer 2

Resposta:

$1 \div 4 \times 2 {}^{ - 2}$

$\frac{1}{4} \times 2 {}^{ - 2}$

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

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

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

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

$\frac{1}{16}$

Espero ter ajudado!!!