I would eliminate the exponent (4) and move Z^-2 to the numerator and y^-8^4 to the denominator.
81X^20*Z^2/y^32
Please Simplify
( 3x^5 y^-8)^4 )
(------------- )
( z^-2 )
2 answers
How long will it take to earn $525 in interest if $3500 is invested at a 6% annual interest rate?