因数分解３

[0]5X2 +10X -240=

5( X +8 )( X -6)

[1]9X2 -225=

9( X -5 )( X +5)

[2]6X2 +114X +540=

6( X +9 )( X +10)

[3]9X2 -144X +567=

9( X -9 )( X -7)

[4]5X2 +15X -20=

5( X +4 )( X -1)

[5]4X2 -36X -88=

4( X -11 )( X +2)

[6]6X2 +96X +378=

6( X +7 )( X +9)

[7]9X2 +27X -162=

9( X -3 )( X +6)

[8]7X2 +14X -693=

7( X +11 )( X -9)

[9]3X2 -12=

3( X +2 )( X -2)



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