初一数学下册计算题天天练 10.docx

1、初一数学下册计算题天天练 109 7(x225x15y)(x220x12y) 8 8 1 1(5k39k26)(3k37k26k) 4 2 (5k2 k)(2k26k4) (3a2 a b)(8a22a5b) 2x2(7x22x5)(5x2) 8y2(3x2y)(4x29y2) 1(6x27xyx)( x27xy9x) 4 5 5(xy y23)(x2xy9y26) 6 4 1 1(xyy)(xyx8) 6 5 (9y3x8z2)(9y6x2z2) (5m25m2)(3m2n3) (7x23x6)7(2x29x) 8(x23)2(x25) (x2y5xy4)7(x2y6xy4) 1 1(x21

2、7x18y)(x213x17y) 7 7 1 1(7k34k29)(7k38k29k) 4 4 (7k24k)( k28k4) (5a26a b)(4a2 a2b) 2x2(3x2 x9)(3x5) 5y2(2x2y)(8x23y2) 1(2x25xyx)( x28xy3x) 8 1 2(xy y23)(x2xy y29) 5 3 6 5(xyy)(xyx2) 5 4 (7y4x8z2)(2y8x z2) (3m22m3)(7m3n3) (7x22x8)4(4x23x) 6(x23)6(x27) (x2y5xy2)8(x2y8xy7) 5 7(x220x10y)(x217x21y) 6 6 1

3、 1(3k34k27)(8k37k29k) 6 6 (4k22k)(7k26k5) (6a29a5b)( a28a7b) 7x2(8x2 x5)(9x5) 5y2(9x2y)(8x2 y2) 1(8x23xyx)(6x28xy6x) 4 2 1(xy6y21)(x2xy4y25) 3 4 1 5(xyy)(xyx4) 8 6 (4y2x9z2)(3y x z2) ( m26m8)(2m5n1) (7x25x8)7(6x24x) 5(x26)3(x23) (x2y8xy9)8(x2y5xy9) 1 4(x214x20y)(x216x24y) 5 5 1 1(8k35k29)(6k3 k27k)

4、2 5 (7k26k)(4k27k8) ( a23a4b)(6a29a b) 4x2(3x23x4)(3x9) 2y2(4x2y)(5x25y2) 6(6x24xyx)(9x22xy5x) 5 9 8(xy7y27)(x2xy7y24) 8 7 1 2(xyy)(xyx8) 5 3 (2y7x2z2)(7y9x3z2) (3m25m4)(7m n9) (4x25x6)4(4x28x) 5(x29)2(x23) (x2y3xy3)3(x2y2xy9) 2 4(x225x12y)(x213x10y) 3 3 1 1(2k3 k28)(5k39k23k) 4 6 (5k29k)(2k25k7) (

5、a25a7b)(4a29a b) 8x2( x28x3)(5x8) 9y2(9x2y)(8x23y2) 5(4x22xyx)(4x24xy2x) 4 5 8(xy3y22)(x2xy9y29) 4 7 4 8(xyy)(xyx3) 5 7 (4y2x5z2)(4y8x6z2) ( m26m7)( m9n6) (6x22x9)8(8x26x) 2(x26)7(x28) (x2y4xy3)5(x2y4xy5) 4 6(x222x13y)(x211x28y) 5 5 1 1(2k39k23)(4k34k29k) 4 2 (4k27k)(4k2 k4) (5a22a b)(7a25a3b) 8x2(6

6、x22x7)(5x9) 3y2(5x2y)(9x26y2) 6(7x29xyx)(2x28xy6x) 7 1 7(xy y27)(x2xy4y24) 6 6 1 1(xyy)(xyx2) 7 5 (4y9x9z2)(2y x4z2) (9m27m7)(4m2n1) ( x23x3)8(9x28x) 5(x21)3(x21) (x2y5xy8)9(x2y5xy6) 1 6(x213x11y)(x214x23y) 5 5 1 1(5k37k28)(5k35k26k) 2 3 (9k29k)(3k26k5) ( a25a7b)(7a26a9b) 7x2(9x24x8)(8x5) 7y2(5x2y)( x28y2) 1(6x29xyx)( x26xy3x) 4 7 4(xy3y26)(x2xy7y24) 8 3 1 1(xyy)(xyx2) 5 5 (4y4x6z2)(4y8x6z2) (6m23m5)(6m2n3)