式の展開3

[0]7( X +3 )( X -3)=

7X2 -63

[1]8( X -7 )( X +10)=

8X2 +24X -560

[2]2( X +8 )( X -3)=

2X2 +10X -48

[3]9( X +7 )( X +5)=

9X2 +108X +315

[4]5( X +6 )( X -9)=

5X2 -15X -270

[5]4( X -13 )( X +7)=

4X2 -24X -364

[6]4( X +4 )( X +7)=

4X2 +44X +112

[7]8( X -3 )( X -4)=

8X2 -56X +96

[8]2( X +13 )( X -3)=

2X2 +20X -78

[9]4( X -3 )( X +10)=

4X2 +28X -120




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