Question

calcule o sexto termo de (x+4) elevado a 8

Answer 1

y[n+1]→(a+b)^e

y[n+1]=(Cn,e).(b^n).(a^[e-n])

y6→(x+4)^8

y[n+1]=(Cn,e).(b^n).(a^[e-n])
y[5+1]=(C5,8).(b^5).(a^[8-5])
y6=(8!/[5!.(8-5)!]).(b^5).(a^3)
y6=(8.7.6.5!/5!.3!)(b^5)(a^3)
y6=(8.7.6/3.2.1)(b^8)(a^2)
y6=(4.7.2)(b^5)(a^3)
y6=56.b^5.a^3