Question

please answer the questions​

Answer 1

(2a-3) (a^2-3a+5) - (a-1) (5a^2+3a-3)

2a^3-6a+10a-3a^2+9a-15 -(5a^3+3a^2-3a-5a^2-3a+3)

2a^3-6a+10a-3a^2+9a-15-5a^3-3a^2+3a+5a^2+3a-3)

-3a^3+19a-a^2-18