Question

A: (-3/4) elevado a -1
B: -(1/5) elevado a -2
C: (1/2) elevado a -1 +(1/2) elevado a -2
D: (2/5) elevado a 0 × (0,01) elevado a dois × (1/2) elevado a -2

Answer 1

a) $( \frac{3}{4} )^{-1} = -\frac{4}{3} = -1,33...$
b) $- \frac{1}{5}^{-2} = -\frac{25}{1} = -25$
c)$( \frac{x}{y} )^{-1} + (\frac{x}{y})^{-2} = \frac{2}{1} + \frac{4}{1} = \frac{6}{1} = 6$
d) $( \frac{2}{5}) * \frac{1}{100}^2 * \frac{4}{1} = \frac{1*4}{10000} = \frac{4}{10000} = 0,0004$