Question

1) Calcule as potências:
a) 4-2=
b) 4-3=_
c) 5-1 =
d) 3-3 =
e) 10-2=
f) 10-9 =
g) 2-3 =​

Answer 1

a)

${4}^{ - 2}$

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

$\frac{1}{16}$

b)

${4}^{ - 3}$

$\frac{1}{{4}^{3} }$

$\frac{1}{64}$

c)

${5}^{ - 1}$

= - 5

d)

${3}^{ - 3}$

$\frac{1}{ {3}^{3} }$

$\frac{1}{27}$

e)

${10}^{ - 2}$

$\frac{1}{ {10}^{2} }$

$\frac{1}{100}$

f)

${10}^{ - 9}$

$\frac{1}{ {10}^{9} }$

$\frac{1}{1000000000}$

g)

${2}^{ - 3}$

$\frac{1}{ {2}^{3} }$

$\frac{1}{8}$