1、 8 8(9y6x2z2)(9y6x8z2) ( m28m4)(7m6n5) (5x29x6)7(6x2 x) 2(x24)8(x23) (x2y3xy5)5(x2y8xy6) 1 4(x229x16y)(x213x24y) 5 5 1 1(3k36k27)(7k37k28k) 4 6(3k23k)(3k22k6) (3a28a b)(4a27a4b) 3x2(6x2 x8)(4x7) 3y2(5x2y)(2x24y2) 3(9x25xyx)(8x23xy4x) 4 2 1(xy2y29)(x2xy y28) 3 5 1 2(xyy)(xyx6) 3 3(9y6x9z2)(2y7x9z2) (
2、7m28m2)(7m7n4) (4x23x8)4(9x25x) 4(x24)9(x28) (x2y5xy5)7(x2y7xy9) (x224x17y)(x215x21y) 4 4(4k33k29)(2k38k21k) (6k2 k)( k29k7) (2a23a2b)(9a2 a8b) 6x2(4x2 x9)(3x5) 5y2(6x2y)(9x26y2) 1(7x26xyx)(7x28xy4x) 5(xy7y27)(x2xy6y25) 7 6 1 5(xyy)(xyx6) 4 6(5y2x8z2)(5y7x z2) (3m24m1)( m5n6) (3x27x5)2(6x24x) 2(x26)7(x25) (x2y8xy5)3(x2y7xy6) (x217x12y)(x216x13y) 3 3(4k37k26)(7k3 k22k) 6 5(6k25k)(3k26k6) (8a2 a4b)(2a22a6b) 5x2( x27x4)(2x4) 7y2(3x2y)(5x27y2) ( x25xyx)(5x2 xy x) 6(xy5y21)(x2xy8y22) 6 7 3 1(xyy)(xyx2) 4 4(4y5x7z2)(5y3x9z2)