Question

Desenvolvendo (a-1) elevado a 5 pot.

Answer 1

(a-1)^5

=(a-1).(a-1).(a-1)^3


=(a^2-2a+1).(a^2-2a+1).(a-1)


=a^4-2a^3+a^2-2a^3+4a^2-2a+a^2-2a+1.(a-1)


=a^4-4a^3+6a^2-4a+1.(a-1)

=a^5-4a^4+6a^3-4a^2-a^4-4a^3-6a^2+4a-1


=a^5-5a^4+2a^3-10a^2+4a-1


espero ter ajudado!

bom dia !