式の展開２

[0]	( X +11 )( X +1)=	答えｘ X² +12X +11
[1]	( X -3 )²=	答えｘ X² -6X +9
[2]	( X -9 )( X +2)=	答えｘ X² -7X -18
[3]	( X +4 )( X +12)=	答えｘ X² +16X +48
[4]	( X -6 )( X -8)=	答えｘ X² -14X +48
[5]	( X -4 )( X -10)=	答えｘ X² -14X +40
[6]	( X -12 )( X +9)=	答えｘ X² -3X -108
[7]	( X +10 )( X -7)=	答えｘ X² +3X -70
[8]	( X +2 )( X +11)=	答えｘ X² +13X +22
[9]	( X -4 )( X -1)=	答えｘ X² -5X +4

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