Question

Calcule as potências e justifique-as:
a)3³
b) (1,2)²
c) (-5)³
d) 2/3
e) (-5/2)³
F) 3⁵ ​
URGENTE

Answer 1

Explicação passo-a-passo:

a)

3³=3.3.3=9.3=27

b)

(1,2)²=

$\frac{ {12}^{2} }{ {10}^{2} } = \frac{144}{100}$

= 1,44

c)

(-5)³=(-5).(-5).(-5)=25.(-5)=(-125)

d)

$({ \frac{2}{3} })^{2} = \frac{ {2}^{2} }{ {3}^{2} } = \frac{4}{9}$

e)

$( - { \frac{5}{2} })^{3} = ( + \frac{25}{4} )( - \frac{5}{2} ) = ( - \frac{125}{8} )$

F)

${3}^{5} = 27 \times 9 = 243$