Question

Ax,3=12/Cx,4 ajudar pfv

Answer 1

Ax,3=12/Cx,4

x(x-1)(x-2) = 12x(x-1)(x-2)(x-3)/4!

x(x-1)(x-2) = 12x(x-1)(x-2)(x-3)/24

1 = (x-3)/2

x = 5