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Factor polynomial $$ -12x^{4}-108x^{3}+32x^{2}+72x-16 $$
Answer
$$ -12x^{4}-108x^{3}+32x^{2}+72x-16 = ( -4 )( 3x^{4}+27x^{3}-8x^{2}-18x+4 ) $$
Explanation
After factoring out $ -4 $ we have:
$$ -12x^{4}-108x^{3}+32x^{2}+72x-16 = -4 ( 3x^{4}+27x^{3}-8x^{2}-18x+4 ) $$