1、初一数学下册计算题天天练 48 8(x29)4(x26) (x2y2xy4)8(x2y5xy3) 1 9(x225x12y)(x211x22y) 8 8 1 1(4k33k26)(8k38k26k) 6 5 (6k28k)(3k23k6) (2a2 a4b)(5a24a8b) 7x2(4x27x9)(7x9) y2(9x2y)(3x25y2) 6(3x25xyx)(6x2 xy x) 7 3 5(xy3y22)(x2xy y25) 4 4 6 9(xyy)(xyx4) 7 8 (8y8x7z2)(5y x7z2) (4m28m3)(5m9n7) (7x24x3)2(4x2 x) 4(x23)7
2、(x23) (x2y5xy7)3(x2y3xy8) 5 1(x213x20y)(x216x15y) 4 4 1 1(6k3 k21)(9k32k24k) 2 5 (3k27k)( k22k2) (3a25a6b)(8a29a8b) 4x2( x27x8)(3x3) 2y2(9x2y)(4x27y2) 5( x23xyx)(8x24xy5x) 6 3 1(xy6y27)(x2xy y28) 4 7 9 7(xyy)(xyx8) 8 6 (9y3x5z2)( y7x z2) ( m26m8)(4m9n6) (8x28x2)6( x27x) 7(x22)5(x28) (x2y6xy3)2(x2y5x
3、y5) 1 7(x218x19y)(x216x15y) 8 8 1 1(8k32k29)(9k37k21k) 4 2 (5k23k)(4k23k6) ( a26a6b)(2a27a6b) 4x2(6x2 x9)(3x9) 5y2(4x2y)(9x23y2) 6(6x25xyx)(7x27xy7x) 7 4 1(xy y23)(x2xy9y25) 3 3 6 5(xyy)(xyx6) 7 4 (7y7x5z2)( y2x7z2) (7m26m7)(7m3n1) (4x24x2)6(5x26x) 9(x24)3(x26) (x2y9xy8)8(x2y4xy9) 9 1(x229x16y)(x219
4、x20y) 8 8 1 1(7k33k27)(3k36k29k) 2 2 (9k23k)( k28k9) (2a27a3b)(8a25a6b) 4x2(2x2 x6)(4x5) 6y2(5x2y)(7x28y2) 2(9x25xyx)(8x26xy4x) 3 3 6(xy2y23)(x2xy6y26) 4 7 1 7(xyy)(xyx8) 4 6 (8y7x2z2)(3y3x z2) (7m28m5)(3m n6) (7x26x9)7(8x22x) 2(x25)3(x22) (x2y3xy2)7(x2y2xy5) 5 1(x215x12y)(x216x20y) 6 6 1 1(5k37k22)
5、(2k33k27k) 6 2 (6k27k)(9k27k8) (3a23a9b)(5a24a b) 4x2(5x27x3)(5x1) 2y2(8x2y)(8x24y2) 1(3x22xyx)(5x25xy9x) 7 6 1(xy3y23)(x2xy3y24) 5 6 1 1(xyy)(xyx9) 4 3 (4y7x8z2)(2y8x9z2) (6m28m8)(2m9n7) (7x26x2)4(5x29x) 5(x26)7(x27) (x2y8xy4)4(x2y3xy6) 1 8(x226x18y)(x217x18y) 7 7 1 1(8k34k26)(8k34k23k) 4 4 (6k27k)
6、(3k24k3) (7a22a3b)(4a27a4b) 6x2(3x2 x9)(5x4) 8y2(5x2y)(3x24y2) 1(6x29xyx)(3x29xy2x) 5 5 1(xy2y24)(x2xy5y21) 4 6 1 5(xyy)(xyx4) 8 6 (4y8x z2)(8y8x8z2) ( m26m1)(4m9n1) (5x28x3)5(5x26x) 9(x26)9(x28) (x2y7xy6)8(x2y8xy2) 1 1(x219x19y)(x215x18y) 7 7 1 1(2k37k27)(3k32k25k) 4 5 (8k23k)(6k24k8) (5a23a4b)(6a26a5b) 2x2(2x2 x2)(5x5) 5y2(4x2y)(8x28y2) 8( x23xyx)( x2 xy2x) 7 1 3(xy6y26)(x2xy2y23) 6 4 1 1(xyy)(xyx1) 3 7
