(9a^2−a^3+a)(−8a^5) помогите пж

Question

(9a^2−a^3+a)(−8a^5) помогите пж

Answer 1

(9а²-а³+а)(-8а^5) = -72а^7+8а^8-8а^6

Answer 2

......
(9а^2-а^3+а)(-8а^5) = -72а^7+8а^8-8а^6.....