-0.3a(4a²-3)(2a²+5)=

Question

-0.3a(4a²-3)(2a²+5)=

Answer 1

-0.3a(4a?-3)(2a?+5)=
-1.2a3 – 0.9a (2a2 + 5)
-1.2a3 – 1.8a3 – 4.5a
-1.2a3 – 1.8a3 = -3a3
-3a3  – 4.5a = -7.5a