因数分解２

[0]X2 +2X -35=

( X +7 )( X -5)

[1]X2 -16=

( X -4 )( X +4)

[2]X2 +7X +12=

( X +3 )( X +4)

[3]X2 +6X -27=

( X +9 )( X -3)

[4]X2 -6X +9=

( X -3 )^2

[5]X2 -144=

( X -12 )( X +12)

[6]X2 +12X +11=

( X +1 )( X +11)

[7]X2 +17X +60=

( X +5 )( X +12)

[8]X2 +X -90=

( X -9 )( X +10)

[9]X2 -18X +77=

( X -7 )( X -11)



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