Need help solve (x^12 y^5 over y^-3 z)^-4

[leilei2007]

Need help solve (x^12 y^5 over y^-3 z)^-4

please help need to understand step by step

 

[Deleted member 4993]

please help need to understand step by step

Hint:

Review:

http://www.purplemath.com/modules/exponent.htm

Use

\(\displaystyle (a^m)^n \, = \, a^{m\cdot n}\)

and

\(\displaystyle \frac{a^m}{a^n} \, = \, a^{(m-n)}\)