因数分解３

[0]2X2 +46X +260=

2( X +10 )( X +13)

[1]7X2 -98X +280=

7( X -4 )( X -10)

[2]2X2 +30X +100=

2( X +10 )( X +5)

[3]6X2 -6X -540=

6( X +9 )( X -10)

[4]7X2 -147X +770=

7( X -11 )( X -10)

[5]9X2 -27X -36=

9( X +1 )( X -4)

[6]4X2 +76X +360=

4( X +9 )( X +10)

[7]3X2 +33X +30=

3( X +1 )( X +10)

[8]3X2 +3X -330=

3( X +11 )( X -10)

[9]3X2 +15X -72=

3( X +8 )( X -3)



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