Respuesta :

6(3)[(3)-1] + 4

B(rackets) I(ndicies) D(ivision) M(ultiplication) A(ddition) S(ubtraction)

6(3) (2) + 4
18(2) + 4
36 + 4
40

The value of 6n(n−1)+4, when n=3 is 40