Question

desenvolva os binonios (x-1)7

Answer 1

Bom dia 

Binômio de Pascal 

C(7,0) = 7!/7!0! = 1 
C(7,1) = 7!/6!1! = 7
C(7,2) = 7!/5!2! = 21
C(7,3) = 7!/4!3! = 35
C(7,4) = 7!/3!4! = 35
C(7,5) = 7!/2!5! = 21 
C(7,6) = 7!/1!6! = 7
C(7,7) = 7!/(0!7! = 1

(x - 1)^7 = x^7 - 7x^6 + 21x^5 - 35x^4 + 35x^3 - 21x^2 + 7x - 1