Помогите пж! 5a²×1,5a⁴-1/3a×6a²+a³×(-4a²)-a²×(-a²)-12×(-3)

= (5*1,5)*а^6-2*a+(-4a^5)+a^4+36=7,5*а^6-2*a+(-4a^5)+a^4+36= 7,5*а^6--4a^5+a^4-2*a+36=a(7,5a^5-4a^4+a^3-2)+36