Simplify 6x-4x^2-7x^3+9x^2-5x

$6 x - 4 x^{2} - 7 x^{3} + 9 x^{2} - 5 x$

Subtract $5 x$ from $6 x$ .

$- 4 x^{2} - 7 x^{3} + 9 x^{2} + x$

Add $- 4 x^{2}$ and $9 x^{2}$ .

$- 7 x^{3} + 5 x^{2} + x$

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