SOLUTION: A partial solution set is given for the polynomial equation. Find the complete solution set. (Enter your answers as a comma-separated list.) x^3 + 5x^2 − 20x − 42 = 0;

Question 1098886: A partial solution set is given for the polynomial equation. Find the complete solution set. (Enter your answers as a comma-separated list.)
x^3 + 5x^2 − 20x − 42 = 0; {−7}
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!

-7   |    1     5     -20     -42
     |
     |         -7      14      42
     |_________________________________
         1     -2      -6       0

You can use general solution of quadratic equation to find the roots of the quadratic factor:

--------the two quadratic roots
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SOLUTION: A partial solution set is given for the polynomial equation. Find the complete solution set. (Enter your answers as a comma-separated list.) x^3 + 5x^2 &#8722; 20x &#8722; 42 = 0;