Question

o valor da expressão numérica
$( - \frac{1}{2} ) {}^{4} \div ( - \frac{1}{2} ) \times ( - \frac{1}{2} {}^{6} ) + {2}^{ - 7}$

Answer 1

  (-1/2)⁴ : (-1/2) x  (-1⁶/2) + 2⁻⁷ =

  (-1/2)³ x (-1/2) + (1/2)⁷ =

 (-1/2)⁴ + (1/2)⁷ =

  1/16 + 1/128 = ¨¨¨¨¨¨¨mmc(128,16) = 128

 8/128 + 1/128 =

      9/128