Question

calcule as potencias
a) 2 elevado a -1
b) 1 elevado a -2
c) 2 elevado a -2
d) -2) elevado a -3

Answer 1

$a) 2^{-1} = \frac{1}{2^{1} } = \frac{1}{2}$

$b) 1^{-2} = \frac{1}{1^{2} } = 1$

$c) 2^{-2} = \frac{1}{2^{2} } = \frac{1}{4}$

$d) -2^{-3} = \frac{1}{-2^{3} } = -\frac{1}{8}$