式の展開２

[0]	( X +7 )( X +5)=	答えｘ X² +12X +35
[1]	( X +3 )( X -4)=	答えｘ X² -X -12
[2]	( X +8 )( X +9)=	答えｘ X² +17X +72
[3]	( X -6 )( X +1)=	答えｘ X² -5X -6
[4]	( X +3 )( X +10)=	答えｘ X² +13X +30
[5]	( X +3 )( X -11)=	答えｘ X² -8X -33
[6]	( X -8 )( X +13)=	答えｘ X² +5X -104
[7]	( X +5 )( X -11)=	答えｘ X² -6X -55
[8]	( X +12 )( X +10)=	答えｘ X² +22X +120
[9]	( X -7 )( X +4)=	答えｘ X² -3X -28

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