$$(3x-2)( { x }^{ 2 } -1-(4 { x }^{ 3 } -3x+1)$$
$\left(3x-2\right)\left(x+1\right)\left(-4x^{2}+5x-2\right)$
$$\left(3x-2\right)\left(x^{2}-1-4x^{3}+3x-1\right)$$
$$\left(3x-2\right)\left(x^{2}-2-4x^{3}+3x\right)$$
$$11x^{3}-12x-12x^{4}+7x^{2}+4$$
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$4-12x+7x^{2}+11x^{3}-12x^{4}$