9b^3 -11 -10b^3
combine like terms
9b^3 -10b^3 -11
-b^3 -11
Answer:
[tex]\large\boxed{-b^3-11}[/tex]
Step-by-step explanation:
[tex](9b^3-11)-10b^3\qquad\text{cobine like terms}\\\\=(9b^3-10b^3)-11=-b^3-11[/tex]
