1、 1 (5x28xyx)(2x2 xy9x) 8 8 5 (xy9y23)(x2xy8y24) 7 4 1 1 (xyy)(xyx1) 6 6 (7y5x2z2)(6y9x8z2) (6k2 k)(2k29k2) (5a22a3b)(8a27a4b) 5x2(3x2 x5)(5x1) 3y2(3x2y)(2x22y2) (2x24xyx)(8x25xy x) 4 1 1 (xy9y25)(x2xy6y21) 4 4 6 1 (xyy)(xyx4) 7 7 (9y5x2z2)(7y3x3z2) (6k29k)( k27k5) (4a23a9b)( a25a2b) 7x2(2x28x8)(8x7)
2、 7y2(5x2y)(4x23y2) (9x23xyx)(6x29xy6x) 6 1 6 (xy5y27)(x2xy2y23) 7 5 1 8 (xyy)(xyx7) 8 7 (2y3x9z2)(4y9x6z2) (9k27k)(9k29k5) (3a26a b)(3a25a7b) 9x2(6x29x6)(8x2) 8y2(7x2y)(5x28y2) (8x24xyx)( x25xy x) 3 3 1 (xy9y28)(x2xy5y21) 4 6 1 4 (xyy)(xyx1) 8 3 (2y8x4z2)(2y5x6z2) (6k27k)(4k2 k8) ( a24a6b)(3a22a5b) 9x2(5x27x7)(3x5) 4y2( x2y)( x22y2) (3x25xyx)(7x24xy2x) 5 9 (xy9y21)(x2xy5y22) 4 8 (xyy)(xyx3) 8 6 (8y6x8z2)(3y8x2z2) (8k25k)(6k27k3) (5a23a b)(7a28a7b) 5x2(9x29x8)(9x9) 7y2(6x2y)(4x25y2)