Question

calcule as potências de expoentes fracionados.

a ) 4½. b ) 27⅓. c ) 8 ⅔.


mim ajude prfv ​

Answer 1

Oie, Td Bom?!

a)

$4 {}^{ \frac{1}{2} } = (2 {}^{2} ) {}^{ \frac{1}{2} } = 2 {}^{2 \: . \: \frac{1}{2} } = 2 {}^{1} = 2$

b)

$27 {}^{ \frac{1}{3} } = (3 {}^{3} ) {}^{ \frac{1}{3} } = 3 {}^{3 \: . \: \frac{1}{3} } = 3 {}^{1} = 3$

c)

$8 {}^{ \frac{2}{3} } = (2 {}^{3} ) {}^{ \frac{2}{3} } = 2 {}^{3 \: . \: \frac{2}{3} } = 2 {}^{2} = 4$

Att. Makaveli1996