Find the sum of the following expressions. \[ 1+2 y-3 y^{2}-5 y^{3} ;-1+2 y^{2}-y ; 5 y^{3}+3 y^...

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Find the sum of the following expressions.
\[
1+2 y-3 y^{2}-5 y^{3} ;-1+2 y^{2}-y ; 5 y^{3}+3 y^{6}+4
\]
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