Why is this true of a 3rd degree polynomial?

1 ⤊

Why is this true of a 3rd degree polynomial?

Please explain why you can always find all the zeros of a 3rd degree polynomial once you find the first zero.

2007-04-04 04:49:08 · 2 answers · asked by andy 1 in Science & Mathematics ➔ Mathematics

2 answers

Once you find the first zero and factor it out, then you have a quadratic left over. Then you can use the quadratic formula to find its zeros.

2007-04-04 04:53:58 · answer #1 · answered by modulo_function 7 · 1⤊ 0⤋

Because then, you can reduce the 3rd-degree poly, to a 2nd-degree poly. which is a quadratic, and use the quadratic formula to get the other 2 zeros.

.

2007-04-04 11:55:44 · answer #2 · answered by tlbs101 7 · 0⤊ 0⤋