How to solve the cubic equation of one variable?

How to solve the cubic equation of one variable?

I just want to say that the solution I need to master in junior high school is to first guess a root m (usually small integers such as positive and negative 1,2,3), and then use factorization to take (x-m) as a term, and the other term is (AX & # 178; + BX + C) to multiply them, and then corresponding to the original cubic equation, remove ABC, and then decompose ax & # 178; + BX + C = 0 to find the other two by referring to the quadratic equation of one variable
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