Question

simplifique 6 . 7! 6! 5

Answer 1

Boa noite

6! =1*2*3*4*5*6

7!=1*2*3*4*5*6*7=(1*2*3*4*5*6)*7=6!*7

6*7!*6!*5 = 6*6!*7*6!*5 = 5*6!*7*6! = 5*7*6!*6!= 35*(6!)²