Question

2)calcule as potências a seguir

Answer 1

Resposta:

a) 5³ = 125

b) 10⁵ = 100000

c) 2⁷ = 128

d) 3⁴ = 81

e) 11⁻² = $\frac{1}{11^{2} } =\frac{1}{121}$ ($a^{-n} = \frac{1}{a^{n} }$)

f) 20⁰ = 1

g) 1000¹ = 1000

h) (1,8)² = $\frac{18}{10} = (\frac{9}{5})^{2} = \frac{81}{25}$

i) (0,4)² = $\frac{4}{10} = (\frac{2}{5})^{2} = \frac{4}{25}$

j) $(\frac{2}{3})^{3}$ = $\frac{2^{3}}{3^{3} } = \frac{8}{27}$

k) (2,5)² = $\frac{25}{10} = (\frac{5}{2})^{2} = \frac{25}{4}$

l) $(\frac{1}{2})^{-4}$ = $2^{4} = 16$ ($(\frac{1}{a} )^{-n} = a^{n}$)

m) (3,7)⁰ = 1