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-12c^{2}-37c-21
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-12c^{2}-37c-21
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-12c^{2}-9c-28c-21
Apply the distributive property by multiplying each term of -3c-7 by each term of 4c+3.
-12c^{2}-37c-21
Combine -9c and -28c to get -37c.
-12c^{2}-9c-28c-21
Apply the distributive property by multiplying each term of -3c-7 by each term of 4c+3.
-12c^{2}-37c-21
Combine -9c and -28c to get -37c.
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