Answer:
(-ab^{2} )^{3}
(-3x^{2} b^{3})^{3}
Step-by-step explanation:
(-ab^2)^3 or [tex](-ab^{2} )^{3}[/tex]
for -27 x^6 b^9
[tex](-3x^{2} b^{3})^{3}[/tex]
