Question

Qual o valor de cada potência
a)(-5/6)⁴=
b)(-7/8)³=
c)(-4/7-³=​

Answer 1

$a)( - \frac{5}{6} ) {}^{4} = \\ \frac{5 {}^{4} }{5 {}^{4} } \\ \frac{625}{1296}$

$b)( - \frac{7}{8} ) {}^{3} \\ - ( \frac{7}{8} ) {}^{3} \\ - \frac{7 {}^{3} }{8 {}^{3} }$

$- \frac{343}{512}$

$c)( - \frac{4}{7} ) {}^{3} \\ -( \frac{4}{7} ) {}^{ 3 } \\ - \frac{4 {}^{3} }{7 {}^{3} }$

$- \frac{64}{343}$