SOLUTION: 3x^3+9x+12

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Question 1135674: 3x^3+9x+12
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
3%28x%5E3%2B3x%2B4%29

Using Rational Roots Theorem & Synthetic Division, and general solution formula of quadratic equation,

Roots are system%28-1%2C+%281-i%2Asqrt%2815%29%29%2F2%2C%281%2Bi%2Asqrt%2815%29%29%2F2%29.

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