初一数学下册计算题天天练 11.docx

1、初一数学下册计算题天天练 11 (2x23x7)4( x23x) 4(x22)5(x27) (x2y7xy3)7(x2y2xy3) 1 5(x213x20y)(x220x14y) 4 4 1 1(6k32k24)(6k34k22k) 6 6 (4k25k)(6k25k4) (9a2 a4b)( a26a7b) 3x2(4x29x1)(4x2) 8y2(5x2y)(4x22y2) 7(3x26xyx)(8x2 xy3x) 6 1 6(xy6y29)(x2xy9y25) 5 5 1 3(xyy)(xyx4) 8 4 (4y2x9z2)(9y3x z2) ( m27m6)(8m6n6) (6x28x

2、7)6(2x26x) 8(x22)3(x22) (x2y9xy8)8(x2y6xy3) 1 1(x211x10y)(x211x22y) 5 5 1 1(9k36k27)(6k38k24k) 4 3 (4k2 k)(4k2 k7) (4a24a4b)( a24a b) x2(7x26x1)(2x2) 9y2(7x2y)(7x29y2) 7(8x28xyx)(9x27xy6x) 6 3 1(xy5y29)(x2xy9y21) 4 5 2 8(xyy)(xyx2) 3 7 (2y6x8z2)(4y7x9z2) (8m29m1)(6m6n9) (8x25x6)2(8x25x) 8(x26)7(x24)

3、 (x2y4xy5)2(x2y5xy4) 2 2(x210x12y)(x215x17y) 3 3 1 1(3k3 k29)(3k37k22k) 4 4 (8k23k)(4k29k1) (2a24a2b)( a22a8b) 8x2(2x2 x5)(8x9) 8y2( x2y)( x26y2) 1(2x29xyx)(2x29xy3x) 3 4 4(xy5y22)(x2xy7y23) 5 3 1 1(xyy)(xyx1) 5 7 (6y9x7z2)(9y2x2z2) ( m2 m6)(2m4n1) (5x22x7)3(8x27x) 3(x28)8(x24) (x2y5xy5)2(x2y8xy6) 1

4、 1(x222x10y)(x216x16y) 6 6 1 1( k37k22)(6k32k21k) 6 3 (8k26k)( k25k2) (7a24a b)(7a26a7b) 3x2(5x22x5)(5x8) 4y2(2x2y)(4x27y2) 1(4x23xyx)(9x2 xy8x) 6 9 7(xy6y27)(x2xy2y24) 8 8 1 9(xyy)(xyx4) 3 8 (5y9x8z2)(2y x z2) (4m26m8)(2m6n7) (6x22x9)3(3x23x) 8(x24)4(x23) (x2y2xy6)2(x2y2xy3) 5 3(x222x11y)(x216x13y)

5、 4 4 1 1(4k32k22)(5k39k24k) 2 6 (9k23k)(6k24k3) (5a2 a8b)(8a29a3b) 8x2(5x2 x6)( x7) 8y2(3x2y)(3x24y2) 1(8x25xyx)(2x23xy7x) 5 8 7(xy y24)(x2xy6y22) 7 6 6 1(xyy)(xyx6) 7 7 (4y6x8z2)(7y x z2) (7m2 m2)(3m4n4) (5x27x5)4(9x25x) 7(x22)9(x22) (x2y7xy9)8(x2y6xy2) 1 7(x213x14y)(x217x23y) 8 8 1 1(5k37k29)(2k32

6、k29k) 2 6 (8k24k)(7k29k3) (7a23a5b)(6a24a7b) 4x2( x26x4)(5x2) y2(7x2y)(6x26y2) 4(4x29xyx)(5x22xy7x) 3 4 1(xy2y28)(x2xy5y25) 5 8 2 7(xyy)(xyx2) 3 6 (8y4x3z2)(4y5x3z2) (3m22m4)(5m n8) ( x23x9)7(3x26x) 2(x28)5(x23) (x2y5xy7)8(x2y5xy3) 2 2(x217x19y)(x210x23y) 3 3 1 1(8k34k22)(7k36k23k) 6 2 (5k2 k)(7k25k5) ( a22a b)(6a28a6b) x2(7x26x1)(8x1) 2y2( x2y)(8x28y2) 4(4x25xyx)( x29xy9x) 5 7 3(xy3y26)(x2xy2y23) 8 4