七年级数学下册计算题26.docx

1、七年级数学下册计算题26 (7k24k)( k22k4) (3a27a8b)( a26a8b) x2(7x2 x9)(7x2) 4y2(5x2y)(9x22y2) 7( x22xyx)(6x22xy x) 8 1 5(xy2y22)(x2xy5y28) 8 6 3 1(xyy)(xyx2) 4 5 (2y5x z2)(4y8x4z2) ( k28k)(4k24k2) (2a22a7b)(4a24a5b) x2(8x26x3)( x9) 2y2(4x2y)(5x24y2) 5(9x26xyx)(6x23xy5x) 4 5 1(xy3y24)(x2xy9y26) 6 6 4 5(xyy)(xyx3

2、) 3 4 (6y6x3z2)(9y2x5z2) ( k29k)(7k24k5) (6a28a3b)(4a23a8b) 3x2( x22x7)(6x9) 5y2(8x2y)(7x26y2) 5(9x23xyx)(4x28xy5x) 6 1 3(xy4y22)(x2xy6y22) 4 4 1 7(xyy)(xyx5) 6 8 (4y8x2z2)(3y9x z2) (7k24k)(8k29k7) (4a26a6b)(8a24a7b) x2(8x27x5)(8x6) 4y2(5x2y)(8x23y2) 1(3x24xyx)(8x24xy5x) 7 1 1(xy7y24)(x2xy2y25) 5 5

3、6 1(xyy)(xyx2) 5 3 (6y x8z2)(9y8x5z2) (3k23k)(3k2 k9) (7a2 a3b)(6a22a7b) 4x2(7x25x7)(3x8) 9y2(9x2y)(6x24y2) 6(3x29xyx)(6x23xy2x) 7 4 5(xy8y28)(x2xy7y21) 5 4 4 4(xyy)(xyx6) 5 5 (2y3x5z2)(3y8x z2) (7k27k)(2k25k8) ( a23a5b)(3a2 a2b) x2(9x24x6)(2x8) 5y2(5x2y)(7x2 y2) 2(4x2 xyx)(2x22xy3x) 3 1 1(xy2y26)(x

4、2xy4y24) 4 3 8 7(xyy)(xyx3) 7 6 (5y2x9z2)(8y8x2z2) (9k2 k)( k29k3) (5a25a9b)(2a26a9b) 3x2(5x22x9)(2x6) 8y2(5x2y)(6x28y2) 5(5x26xyx)(9x27xy6x) 6 2 9(xy5y22)(x2xy y27) 3 8 3 6(xyy)(xyx3) 4 5 ( y5x4z2)(2y7x3z2) (2k26k)(3k2 k3) (7a2 a5b)(7a23a6b) 7x2(8x27x9)(3x8) y2(4x2y)(5x23y2) 1(7x26xyx)( x2 xy2x) 6

5、4 1(xy4y28)(x2xy7y27) 5 8 1 6(xyy)(xyx2) 5 5 (3y9x3z2)(2y2x z2) (2k25k)(8k27k4) (7a27a5b)(6a26a4b) 6x2(3x22x1)(2x2) 3y2(5x2y)(8x23y2) 8(9x2 xyx)(4x28xy7x) 7 9 1(xy6y26)(x2xy4y25) 8 5 2 9(xyy)(xyx8) 3 8 (9y2x z2)(2y8x4z2) ( k29k)(7k27k2) (3a25a b)(2a28a9b) 5x2(9x23x8)(3x3) 5y2(6x2y)(9x24y2) 1(4x29xyx

6、)(9x24xy5x) 6 6 1(xy3y27)(x2xy4y27) 7 3 7 1(xyy)(xyx2) 6 7 (4y4x4z2)(8y4x5z2) (5k23k)(8k26k3) (3a28a7b)(6a2 a8b) x2(6x25x9)(2x7) 3y2(3x2y)(4x29y2) 9( x23xyx)(8x29xy2x) 8 8 1(xy7y21)(x2xy7y23) 7 5 1 1(xyy)(xyx4) 6 5 (2y9x8z2)(9y x6z2) (5k27k)(9k28k2) (7a25a3b)(6a28a6b) 6x2(2x23x9)(3x8) y2( x2y)(5x26y

7、2) 5(7x22xyx)(5x25xy6x) 4 1 6(xy7y24)(x2xy8y25) 5 7 1 9(xyy)(xyx7) 3 8 ( y7x7z2)(9y4x8z2) (4k22k)(9k25k5) (5a28a6b)(8a28a9b) 5x2(5x23x5)(6x2) 8y2(8x2y)(7x25y2) 3(9x26xyx)(6x24xy2x) 4 2 8(xy8y28)(x2xy9y29) 3 7 1 1(xyy)(xyx6) 5 8 (5y2x5z2)(7y7x4z2) ( k28k)( k25k3) (4a24a4b)(8a27a3b) 4x2(9x27x1)(6x1) 9

8、y2(2x2y)(8x22y2) 1(6x22xyx)( x25xy3x) 6 8 1(xy8y28)(x2xy y29) 7 3 5 4(xyy)(xyx3) 4 5 (4y3x9z2)(4y6x9z2) (8k28k)(9k25k4) (7a23a8b)(6a25a b) 3x2(8x23x9)(5x3) 6y2(2x2y)(7x24y2) 3(5x29xyx)(8x24xy9x) 4 2 1(xy2y24)(x2xy6y28) 3 7 1 1(xyy)(xyx1) 4 6 (3y4x3z2)(9y6x2z2) (4k27k)(4k26k8) (5a29a b)(3a2 a5b) 3x2(

9、3x29x8)(5x6) 8y2(7x2y)(4x2 y2) 9(9x23xyx)(4x25xy2x) 8 1 1(xy y29)(x2xy3y29) 3 4 5 5(xyy)(xyx2) 6 6 ( y8x4z2)(4y9x z2) (4k28k)(4k25k7) (8a26a9b)(7a24a b) 7x2(4x26x9)(2x4) y2(3x2y)(3x23y2) 1(7x2 xyx)(6x23xy6x) 7 4 2(xy3y27)(x2xy6y23) 3 3 5 3(xyy)(xyx1) 6 4 (4y3x9z2)(8y9x2z2) (8k27k)(4k26k2) (5a2 a7b)(

10、9a27a9b) 7x2(3x27x5)(9x9) 4y2(8x2y)(6x23y2) 6(4x23xyx)(2x23xy5x) 5 6 5(xy y27)(x2xy6y21) 7 6 4 6(xyy)(xyx7) 5 7 (7y8x z2)(7y7x6z2) (2k2 k)(3k2 k2) (7a27a5b)(7a25a9b) 7x2(4x23x8)(5x5) 5y2(8x2y)(5x23y2) 5(3x27xyx)(8x22xy6x) 6 7 9(xy6y21)(x2xy8y25) 6 8 6 5(xyy)(xyx2) 5 6 (3y3x5z2)(6y8x8z2) (3k24k)(3k25

11、k7) ( a26a2b)(5a23a3b) 4x2(7x24x5)(4x6) 5y2(7x2y)(2x26y2) 7(7x28xyx)(2x24xy8x) 6 3 3(xy9y21)(x2xy8y25) 4 4 4 5(xyy)(xyx8) 3 4 (2y4x z2)(2y8x2z2) (5k2 k)(2k27k2) (3a2 a5b)(4a27a7b) 6x2(9x22x7)(4x1) 5y2(2x2y)(5x22y2) 1(2x23xyx)(4x25xy7x) 5 9 1(xy3y28)(x2xy6y23) 8 7 7 7(xyy)(xyx8) 8 6 (2y8x7z2)(9y3x2z2

12、) (5k29k)(9k28k9) (8a28a b)(9a2 a2b) 3x2(3x26x2)(9x1) 5y2(8x2y)(8x28y2) 1(9x26xyx)(4x23xy8x) 4 4 1(xy6y23)(x2xy6y25) 3 6 2 3(xyy)(xyx3) 3 4 (3y6x8z2)(5y5x5z2) ( k23k)(8k26k6) (7a24a6b)(8a25a9b) 7x2(9x23x3)(7x9) y2(6x2y)(4x29y2) 4(9x26xyx)(8x25xy3x) 5 4 9(xy8y22)(x2xy3y22) 3 8 1 8(xyy)(xyx6) 4 7 (2y8

13、x4z2)(7y x8z2) (7k23k)(8k2 k7) ( a29a5b)(5a2 a8b) 5x2(5x28x1)(5x1) 6y2(9x2y)( x24y2) 3(8x25xyx)(6x26xy7x) 4 5 8(xy3y25)(x2xy4y29) 4 7 8 7(xyy)(xyx4) 7 6 (2y4x7z2)(6y3x7z2) (9k27k)(2k26k9) (6a23a9b)(4a28a5b) 8x2(2x25x9)(7x6) 5y2(3x2y)(3x25y2) 3(3x29xyx)(3x22xy6x) 4 5 4(xy5y28)(x2xy3y24) 6 3 1 1(xyy)(xyx3) 5 8 (7y7x5z2)(4y9x3z2)