Можно поделить многочлен столбиком на
, но мы сгруппируем слагаемые.
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x^3(x - 2) + 3x^2(x - 2) - x(x - 2) - 3(x - 2) = 0 \\
(x - 2)(x^3 + 3x^2 - x - 3) = 0" alt="x^4 + x^3 - 7x^2 - x + 6 = 0 \\ x^3(x - 2) + 3x^3 - 7x^2 - x + 6 = 0\\ x^3(x - 2) + 3x^2(x - 2) - x^2 - x + 6 = 0 \\ x^3(x - 2) + 3x^2(x - 2) - x(x - 2) - 3x + 6 = 0 \\
x^3(x - 2) + 3x^2(x - 2) - x(x - 2) - 3(x - 2) = 0 \\
(x - 2)(x^3 + 3x^2 - x - 3) = 0" align="absmiddle" class="latex-formula">
Разберёмся с
.

.
Корни уравнения
:
