Answer:
x^24
Step-by-step explanation:
First, distribute the 4 to the first brackets and the 2 to the second one
x^20y^-8z^-12/x^-4y^-8z^12
Then, u subtract each variables exponents with the corresponding variables
for example, x^20-x^-4 which is x^24
y^0
z^0
