Answer:
4 y^3 z^3 / x^2 or 4 x^-2 y^3 z^3
Step-by-step explanation:
Coefficient: 28÷7=4
x exponent: 2-4 = -2 if in numerator or 2 in denominator
y exponent: 3-0=3
z exponent: 7-4=3