Question 666432
{{{-4c^3 - 9c^2 + 4c + 8}}}
-({{{4c^3 + 8c^2 + 8c - 4}}})
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Start with each like term
{{{-4c^3 - 4c^3 = 0}}}
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{{{-9c^2 - 8c^2 = -17c^2}}}
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4c - 8c = -4c
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8 - -4 = 12
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Yielding
{{{highlight_green(-17c^2 - 4c + 12)}}}
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