Question

a*a*b(a*a*a-a+1)+ab(a*a*a*a-2a*2a)-b(a*a*a-a*a-1) please

Answer 1

ba^2(a^2+1)+ab(2a^3)-b(a^3-a^2)
ba^4+ba^2+2ba^4-ba^3+ba^2
ba^2(ba^2+2ba^2-ba+1)
ba^2(3ba^2-ba+1)
3b^2a^4-b^2a^3+ba^2
3b^2a^4-a^3