Question

I need help with this algebra problem, the book is giving 1/27 as an answer
(4 - 1)-3
change the negative exponent to a positive exponent by reciprocity
1/(4 - 1)3
1.1.1 = 1
over
4.4.4 -1.-1.-1 =
1 over
64 - 1 =
1 over
63 or 1/63

Answer 1

i dont understand the question really... i know that A^(-x)=1/(A^(x))