A(a-5)-(a-2)(a-3) (2n+1)(4n(2)-2n+1)

Question

A(a-5)-(a-2)(a-3)
(2n+1)(4n(2)-2n+1)

Answer 1

A²-5a-(a²-3a-2a+6)=a²-5a-a²+5a-6=-6
8n³-4n+2n+4n²-2n+1=8n³+4n²-4n+1