Question

3n²-n=102
Él valor de x?

Answer 1

3n^2-n=102
3n^2-n-102=0
{1+-√(1+12×102)}/6
{1+-√(1225)}/6
{1+-35)6

n1= (1+35)/6 = 6

n2=(1-35)/6 = -34/6 = -17/3

Espero te sirva