help me solve this problem (a3-2a2)-(3a2-4a3)
foil3a6+ 4a6+ 6a4+8a615a6+6a4
(a³-2a²)-(3a²-4a³)=a³-(-4a³)-2a²-3a²=a³+4a³-5a²=5a³-5a²=5 (a³-a²)