Simplify:
$2 x^{2} (x + 2) - 3 x (x^{2} - 3) - 5 x (x + 5)$

- x^{3} + x^{2} - 20 x

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- x^{3} - x^{2} - 20 x

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- x^{3} - x^{2} - 16 x

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- x^{3} + x^{2} - 16 x

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Solution

The correct option is C $- x^{3} - x^{2} - 16 x$
$2 x^{2} (x + 2) - 3 x (x^{2} - 3) - 5 x (x + 5)$
$2 x^{3} + 4 x^{2} - 3 x^{3} + 9 x - 5 x^{2} - 25 x$
$- x^{3} - x^{2} - 16 x$

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