Question 1156969
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In a polynomial {{{ax^3+bx^2+cx+d}}}, the sum of the roots is -b/a.<br>
In the polynomial in this problem, there is no x^2 term (i.e., it is 0x^2), so the sum of the roots is 0.<br>
Given that the polynomial is rational and one root is {{{5-sqrt(2)}}}, another root is {{{5+sqrt(2)}}}.<br>
The sum of those two roots is 10, so the third root is -10.<br>
ANSWER: -10<br>