SOLUTION: x^3-13x+12=0

Question 891074: x^3-13x+12=0
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Can you factorize? Try checking possible rational roots. Choose from plus or minus 1,2,3,4,6, maybe 12.

Using synthetic division to check rational roots:
1 is a root. The binomial factor is .
This means, the cubic expression in the equation is .

Now check the quadratic factor:

Discriminant is

----the other two roots.

Answer by MathTherapy(10551) (Show Source): You can put this solution on YOUR website!

x^3 - 13x + 12 = 0

Is it that difficult to state what you want?
Assuming you want this trinomial solved, one of its roots is - 4, so x + 4 is a factor.
= , and factors to: (x - 3)(x - 1)
Therefore, becomes: , so solutions or roots are:
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