Find roots of polynomial $p (x) = x^{3} - 2 x^{2} - 8$

Answer

The roots of polynomial $p (x)$ are:
$x_{1} x_{2} x_{3} = 2.9311 = - 0.4656 + 1.5851 i = - 0.4656 - 1.5851 i$

Explanation

Polynomial $x^{3} - 2 x^{2} - 8$ has no rational roots that can be found using Rational Root Test, so the roots were found using qubic formulas.

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Find roots of polynomial p(x)=x3−2x2−8

The roots of polynomial p(x) are: x1​x2​x3​​=2.9311=−0.4656+1.5851i=−0.4656−1.5851i​

Find roots of polynomial $p (x) = x^{3} - 2 x^{2} - 8$

The roots of polynomial $p (x)$ are:
$x_{1} x_{2} x_{3} = 2.9311 = - 0.4656 + 1.5851 i = - 0.4656 - 1.5851 i$