x_1 =69/3 -11√39/ 3
x_2= 69/3+11√39/ 3
1) Since we have a fraction, let's eliminate it multiplying by 3
2) Then we can carry on. Since we have a quadratic equation let's find out the discriminant:
14 =138x-3x²
3x²-138x+14=0
Δ= (-138)² -4(3)(14) Δ=39
x
x_1 =69 -11√39/ 3
x_2= 69+11√39/ 3