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56c^{3}-189d^{3}
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56c^{3}-189d^{3}
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\left(14c-21d\right)\left(4c^{2}+6cd+9d^{2}\right)
Use the distributive property to multiply 7 by 2c-3d.
56c^{3}-189d^{3}
Use the distributive property to multiply 14c-21d by 4c^{2}+6cd+9d^{2} and combine like terms.
\left(14c-21d\right)\left(4c^{2}+6cd+9d^{2}\right)
Use the distributive property to multiply 7 by 2c-3d.
56c^{3}-189d^{3}
Use the distributive property to multiply 14c-21d by 4c^{2}+6cd+9d^{2} and combine like terms.
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