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a^{4}-16
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a^{4}-16
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\left(a^{3}+4a-2a^{2}-8\right)\left(a+2\right)
Use the distributive property to multiply a-2 by a^{2}+4.
a^{4}-16
Use the distributive property to multiply a^{3}+4a-2a^{2}-8 by a+2 and combine like terms.
\left(a^{3}+4a-2a^{2}-8\right)\left(a+2\right)
Use the distributive property to multiply a-2 by a^{2}+4.
a^{4}-16
Use the distributive property to multiply a^{3}+4a-2a^{2}-8 by a+2 and combine like terms.
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