初一数学下册计算题天天练 31.docx

1、初一数学下册计算题天天练 316 8(xy2y23)(x2xy9y29) 7 7 6 4(xyy)(xyx9) 5 5 (6y2x9z2)(2y4x9z2) (8m22m2)(2m n3) (7x22x7)6(4x29x) 7(x29)2(x26) (x2y4xy6)4(x2y5xy2) 5 7(x222x14y)(x211x24y) 6 6 1 1( k33k29)( k37k28k) 4 4 (3k23k)(6k24k2) (7a26a4b)(5a24a3b) 2x2(5x26x4)(9x7) 6y2(2x2y)(9x22y2) 4(3x24xyx)(2x26xy2x) 3 5 7(xy

2、y22)(x2xy2y26) 6 6 1 3(xyy)(xyx1) 5 4 (5y5x5z2)(9y5x2z2) (8m27m5)(2m4n6) (5x23x6)4( x24x) 7(x25)8(x27) (x2y9xy6)5(x2y8xy8) 6 4(x212x12y)(x219x30y) 5 5 1 1(2k32k23)(3k3 k22k) 6 3 (7k23k)(9k27k6) (6a24a7b)(5a29a3b) x2(7x29x8)(5x5) 7y2(3x2y)(7x27y2) 2(8x24xyx)(2x28xy3x) 3 5 5(xy3y26)(x2xy y24) 6 4 1 1(

3、xyy)(xyx2) 6 5 (2y4x6z2)(9y6x8z2) (9m23m2)(4m9n4) (5x2 x5)3(2x23x) 2(x21)9(x24) (x2y2xy8)2(x2y9xy6) 6 6(x211x19y)(x219x11y) 5 5 1 1(8k32k25)( k33k28k) 4 3 ( k28k)( k24k9) (2a24a3b)(3a24a5b) 9x2(6x28x5)( x2) 4y2(3x2y)(8x25y2) 1(5x2 xyx)( x22xy3x) 8 9 7(xy6y21)(x2xy6y23) 8 6 1 2(xyy)(xyx2) 7 3 (5y3x7z

4、2)( y5x5z2) (4m29m3)(5m4n2) (6x27x7)8(9x29x) 6(x24)6(x29) (x2y3xy4)6(x2y2xy5) 1 3(x215x13y)(x212x28y) 4 4 1 1(2k35k29)(3k38k28k) 6 5 (2k22k)(3k25k3) (6a26a4b)(4a28a4b) x2(9x2 x2)(7x4) 7y2( x2y)(3x24y2) 8(8x28xyx)(5x23xy7x) 7 5 5(xy4y28)(x2xy9y22) 6 6 1 5(xyy)(xyx5) 5 4 (5y9x8z2)(3y6x6z2) (2m22m5)(6m

5、4n2) (7x23x4)6(4x23x) 4(x21)7(x26) (x2y2xy2)6(x2y2xy4) 7 7(x212x11y)(x210x19y) 6 6 1 1( k3 k27)(8k35k26k) 6 5 (5k27k)(6k23k1) (5a26a3b)(2a26a5b) 9x2(7x24x8)( x1) y2(9x2y)(4x27y2) 1(5x26xyx)(4x29xy9x) 8 6 5(xy5y23)(x2xy9y24) 7 4 1 6(xyy)(xyx8) 5 5 (3y3x z2)(5y x2z2) (8m25m4)(5m6n9) (7x26x8)4(2x29x) 8

6、(x28)6(x28) (x2y5xy8)2(x2y7xy8) 4 4(x216x16y)(x216x29y) 3 3 1 1(4k39k21)(2k37k28k) 2 4 (2k28k)(6k26k7) (6a27a5b)(7a26a3b) x2(5x24x5)(7x1) 2y2( x2y)(8x25y2) 7(8x22xyx)(9x2 xy4x) 8 4 1(xy3y22)(x2xy y25) 5 4 5 6(xyy)(xyx4) 4 7 (7y5x8z2)(5y9x8z2) (6m26m5)(4m n8) (2x27x8)5( x24x) 3(x28)3(x25) (x2y2xy5)6(x2y5xy5) 1 9(x222x12y)(x215x30y) 8 8 1 1(4k32k26)(7k33k26k) 4 5 (3k24k)(5k24k9) (9a28a2b)( a29a4b)