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y^{4}+9y^{2}-10
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y^{4}+9y^{2}-10
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\left(y^{2}-1\right)\left(y^{2}+2+8\right)
Subtract 3 from 2 to get -1.
\left(y^{2}-1\right)\left(y^{2}+10\right)
Add 2 and 8 to get 10.
y^{4}+9y^{2}-10
Use the distributive property to multiply y^{2}-1 by y^{2}+10 and combine like terms.
\left(y^{2}-1\right)\left(y^{2}+2+8\right)
Subtract 3 from 2 to get -1.
\left(y^{2}-1\right)\left(y^{2}+10\right)
Add 2 and 8 to get 10.
y^{4}+9y^{2}-10
Use the distributive property to multiply y^{2}-1 by y^{2}+10 and combine like terms.
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