12x^3 + 3x = 321......this might best be solved by graphing......here you go.....https://www.desmos.com/calculator/fbes2leayp
A cubic like this has either 3 real roots..... or 1 real and 2 non-real roots.......this one looks as though it falls into the latter category with a real solution at x = about 2.963
12x^3 + 3x = 321......this might best be solved by graphing......here you go.....https://www.desmos.com/calculator/fbes2leayp
A cubic like this has either 3 real roots..... or 1 real and 2 non-real roots.......this one looks as though it falls into the latter category with a real solution at x = about 2.963