( ) -2(3m²+n+3)=2m²+8( )-2(3m²+n+3)=2m²+8

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()-2(3m²+n+3)=2m²+8()-2(3m²+n+3)=2m²+8()-2(3m²+n+3)=2m²+8()-2(3m²

( ) -2(3m²+n+3)=2m²+8( )-2(3m²+n+3)=2m²+8
( ) -2(3m²+n+3)=2m²+8
( )-2(3m²+n+3)=2m²+8

( ) -2(3m²+n+3)=2m²+8( )-2(3m²+n+3)=2m²+8
(8m²+2n+14 )-2(3m²+n+3)=2m²+8
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