Question

\[A= (a ^{-2}*a ^{4})^{-1}*(a ^{-2})^{-3}*(a ^{7})^{-1}\]

Answer 1

\[A=(a^{2})^{-1}\times(a)^{6}\times(a)^{-7}\]
\[A=(a)^{-2*6*−7}\]
A=a^84

Answer 2

second line: wrong:

A=a^(-2+6-7)=a^(-3) :))

Answer 3

is that anwser simplifed?