1、(4a28a6b)(7a28a5b) x2(8x26x5)(8x1) 6y2(3x2y)(7x22y2) 8(4x28xyx)(9x28xy4x) 7(xy y21)(x2xy5y26) 3 6 1 7(xyy)(xyx7) 7 8( y4x z2)(3y9x z2) (8m26m5)(5m5n7) (8x27x9)5(3x26x) 9(x24)3(x26) (x2y8xy2)2(x2y5xy4) (x218x16y)(x211x27y) 7 7(8k37k25)( k34k23k) 6 4(3k2 k)(8k27k1) (8a23a6b)(8a24a5b) 7x2( x26x7)(7x8)
2、5y2(4x2y)(6x26y2) 4(5x25xyx)(5x26xy x) 5 7 6(xy6y27)(x2xy6y27) 8 5 4 1(xyy)(xyx3) 3 8(4y6x4z2)(4y4x3z2) ( m2 m6)(4m6n9) (6x29x6)7(2x26x) 6(x21)6(x29) (x2y6xy7)4(x2y3xy4) 7 9(x215x16y)(x215x15y) 8 8(3k32k23)(6k32k29k) 2 2(5k24k)(5k22k9) (4a26a6b)(5a22a3b) 6x2(5x23x1)(8x5) 2y2(4x2y)(2x29y2) (8x2 xyx)(2x28xy8x) 4 1(xy3y29)(x2xy7y26) 7 1(xyy)(xyx8) 8 6( y x4z2)(2y7x4z2) (4m28m1)(9m2n8) (9x25x1)8(5x27x) 7(x28)3(x28) (x2y5xy2)6(x2y7xy4) 7 1(x216x13y)(x212x22y) ( k36k25)(9k32k28k) 4 3(3k24k)(2k28k2) (3a28a2b)(5a27a b)