Question

5) Calcular os valores das Potências: (valor 20 pontos)
a) (2³)² =
b) (-3)³ =
c) 6² : 6³ =
d) 7³ . 7² =
e) 5-³ =

Answer 1

Resposta:

a)-

$(2^{3})^{2} =\\2^{3*2} =\\2^{6}$

b)-

$(-3) ^{3} =\\\\-3^{3} =\\\\-(3*3*3)=\\\\-27$

c)-

$6^{2} : 6^{3} =\\6^{-1} =\\\frac{1}{6} \\ou\\0,16\\ou\\6^{-1}$

d)-

$7^{3} * 7^{2} =\\7^{3+2} =\\7^{5} \\ou\\16807\\ou\\1,6807 * 10^{4}$

e)-

$5^{-3} =\\\frac{1}{5^{3} } =\\\frac{1}{125} \\ou\\0,008$