Question

(a^2-a)(4a^2-4a-5)-6

Answer 1

=>(4a^4-4a^3-5a^2-4a^3+4a^2+5a)-6

=>(4a^4-8a^3-a^2+5a)-6

=>-24a^4+48a^3+6a^2-30a

hope it helps