Answer:
36 + 9 u^3 + -54 v^2
Explanation:
Expand the following:
-9 (-u^3 - 4 + 6 v^2)
-9 (-4 - u^3 + 6 v^2) = -9 (-4) - 9 (-u^3) - 9×6 v^2:
-9 (-4) - -9 u^3 - 9×6 v^2
-9 (-4) = 36:
36 - -9 u^3 - 9×6 v^2
-9 (-1) = 9:
36 + 9 u^3 - 9×6 v^2
-9×6 = -54:
Answer: 36 + 9 u^3 + -54 v^2