1、(2a22a2b)(2a27a2b) x2(3x28x8)(7x1) y2(7x2y)( x22y2) 7(2x24xyx)(6x26xy8x) 6 5 1(xy y26)(x2xy6y23) 4 3 6 1(xyy)(xyx7) 5 8(8y6x5z2)(7y6x5z2)(7m26m9)(5m5n2)(6x27x5)4(4x29x)9(x23)7(x22)(x2y4xy4)8(x2y9xy2) 1 6(x227x13y)(x211x12y) 5 5 1 1(9k34k21)(8k37k26k) 6 5(3k24k)(8k29k8)(2a23a8b)(9a26a5b)5x2(3x29x8)(
2、x5) y2(3x2y)(5x29y2) 8(6x22xyx)(3x29xy6x) 7 7 1(xy3y25)(x2xy9y23) 8 8 5 6(xyy)(xyx8) 4 5(2y4x2z2)(2y5x5z2)( m23m7)(3m4n7)(8x29x3)7(3x25x)9(x27)6(x26)(x2y6xy4)3(x2y7xy8) 9 1(x217x15y)(x219x30y) 8 8 1 1(8k37k26)( k35k26k) 6 6(7k27k)(5k26k6)(8a28a6b)(6a23a8b)4x2(8x22x6)(3x7)5y2(9x2y)(6x22y2) 6(9x27xyx)(2x29xy2x) 5 6 3(xy3y28)(x2xy6y22) 7 4 1 2(xyy)(xyx6) 7 3(7y9x z2)(4y4x9z2)(7m28m7)(6m3n8)(3x26x7)7(6x2 x)4(x21)2(x23)(x2y8xy8)3(x2y9xy7) 1 1(x219x10y)(x213x11y) 6 6 1 1(3k38k29)(2k37k21k) 2 3(2k26k)(6k27k4)(9a2 a4b)(7a27a8b)9x2(4x23x2)(4x2)2y2(9x2y)(3x22y2)
