七年级数学下册计算题16.docx

1、七年级数学下册计算题16 (7k23k)(8k22k1) (4a28a9b)(8a26a b) 3x2(3x22x2)( x1) 7y2(2x2y)(9x27y2) 6(8x25xyx)(3x29xy2x) 7 6 5(xy3y23)(x2xy7y29) 5 4 1 1(xyy)(xyx1) 5 8 (2y4x z2)(2y4x4z2) ( k2 k)(4k28k5) (4a29a6b)(7a27a7b) 7x2(4x24x4)(7x5) 7y2(7x2y)(5x22y2) 6(7x29xyx)(8x24xy2x) 7 9 3(xy3y29)(x2xy4y26) 8 4 9 3(xyy)(xy

2、x3) 8 4 (6y x9z2)(8y8x5z2) (8k23k)(8k23k4) (3a23a8b)( a25a3b) 4x2(4x23x7)( x3) 3y2(9x2y)(7x25y2) 4(4x28xyx)(5x22xy9x) 3 5 1(xy5y28)(x2xy3y23) 4 7 1 6(xyy)(xyx5) 7 5 (5y5x2z2)(3y4x5z2) (5k2 k)(3k25k2) (7a24a6b)(2a28a7b) 3x2(2x26x9)(7x8) 9y2(8x2y)(6x26y2) 5(7x22xyx)(2x23xy5x) 4 3 1(xy7y27)(x2xy7y21) 4

3、 3 6 6(xyy)(xyx8) 5 7 (4y2x8z2)(6y2x8z2) (8k26k)(8k26k8) (9a24a7b)(2a27a6b) 5x2(8x2 x8)(2x2) 9y2(2x2y)(2x24y2) 6(9x2 xyx)(9x23xy2x) 5 9 8(xy8y27)(x2xy2y27) 8 7 3 1(xyy)(xyx6) 4 5 ( y3x5z2)(4y6x3z2) (3k2 k)(3k26k5) (5a2 a8b)(2a24a7b) 3x2(2x2 x2)(8x6) 7y2(5x2y)(7x23y2) 4(2x28xyx)(2x24xy7x) 3 5 3(xy y2

4、3)(x2xy3y21) 6 4 3 1(xyy)(xyx4) 4 4 (2y x5z2)(3y6x z2) (2k2 k)(9k22k5) (6a24a b)( a22a b) 2x2(2x23x6)(4x7) 5y2(4x2y)(4x23y2) 9(5x27xyx)(3x25xy x) 8 9 1(xy y22)(x2xy8y29) 8 8 8 1(xyy)(xyx7) 7 4 (5y3x5z2)(4y9x4z2) (8k26k)(2k29k8) (6a28a6b)(6a23a3b) 7x2( x28x8)(5x6) 5y2(2x2y)( x24y2) 1(2x25xyx)(9x27xy

5、x) 7 1 1(xy8y29)(x2xy2y28) 7 3 1 1(xyy)(xyx8) 7 7 (3y6x2z2)( y9x7z2) (7k26k)(6k29k8) (5a26a6b)(6a22a7b) 8x2(8x29x9)(3x5) 5y2(5x2y)(6x28y2) 4(4x29xyx)(9x24xy9x) 3 4 2(xy6y23)(x2xy3y26) 5 3 1 2(xyy)(xyx3) 4 3 (7y7x8z2)(4y x6z2) (4k22k)(2k24k6) (2a25a4b)(6a22a2b) 3x2(5x27x8)(8x1) 8y2(6x2y)(8x28y2) 5(2x

6、28xyx)(7x25xy9x) 6 1 1(xy y28)(x2xy3y22) 3 7 1 1(xyy)(xyx1) 4 5 (8y3x8z2)( y5x z2) (9k2 k)(8k28k1) (9a23a2b)(4a26a8b) 6x2( x23x5)(2x3) 8y2( x2y)(9x22y2) 6(3x28xyx)(9x22xy4x) 5 5 1(xy7y25)(x2xy5y25) 6 5 7 7(xyy)(xyx7) 8 6 (8y6x2z2)(5y2x z2) (8k27k)( k29k5) (2a28a5b)(8a26a b) 9x2(3x25x6)(5x3) 7y2(6x2y

7、)(9x2 y2) 1(4x22xyx)(8x25xy9x) 7 9 5(xy4y25)(x2xy4y25) 8 6 6 5(xyy)(xyx7) 5 4 (2y5x2z2)(2y7x9z2) (7k28k)(7k22k1) (6a25a6b)(6a2 a7b) 9x2( x28x8)(9x7) 5y2(2x2y)(3x28y2) 6(7x24xyx)(3x22xy x) 7 4 1(xy2y22)(x2xy y26) 3 3 1 4(xyy)(xyx5) 6 3 (3y7x4z2)(6y x3z2) (3k2 k)(4k28k1) (5a29a b)(9a28a3b) 4x2(3x28x1)

8、(4x4) 8y2(3x2y)(5x25y2) 4(2x27xyx)(5x28xy6x) 3 7 4(xy7y28)(x2xy2y23) 6 3 7 3(xyy)(xyx4) 6 4 ( y5x8z2)(5y3x2z2) (7k27k)(9k24k8) (6a28a7b)(4a2 a5b) 3x2(3x2 x8)(3x7) 8y2(6x2y)(4x28y2) 7(3x28xyx)(9x29xy8x) 8 4 1(xy4y28)(x2xy3y26) 5 3 1 1(xyy)(xyx7) 3 4 (5y8x6z2)(8y4x7z2) (2k26k)(6k22k8) (3a24a7b)(2a28a8

9、b) x2(3x26x3)(4x2) 4y2(8x2y)(3x24y2) 1(7x26xyx)(5x23xy5x) 6 8 8(xy7y23)(x2xy7y26) 7 7 1 4(xyy)(xyx6) 6 3 (3y5x5z2)(6y7x4z2) ( k26k)( k25k3) (7a28a9b)( a2 a9b) 8x2( x28x8)(8x1) 9y2( x2y)(9x23y2) 4(7x26xyx)(7x27xy6x) 3 7 8(xy5y25)(x2xy5y24) 6 7 5 4(xyy)(xyx5) 6 3 (8y8x z2)( y x3z2) (6k29k)(8k27k9) (5a

10、29a2b)(6a23a3b) 7x2(6x25x4)(6x3) y2( x2y)(3x28y2) 5(3x27xyx)(6x29xy5x) 4 2 1(xy7y22)(x2xy5y29) 3 5 7 6(xyy)(xyx9) 6 7 (8y9x2z2)(2y4x2z2) ( k27k)( k25k3) (3a24a9b)(6a24a b) 8x2(9x29x9)(6x9) 2y2(3x2y)(4x28y2) 1(4x23xyx)(5x28xy x) 7 7 5(xy5y21)(x2xy6y28) 8 6 1 7(xyy)(xyx6) 4 8 (8y6x7z2)(4y6x8z2) (2k22k

11、)(6k2 k1) (9a28a3b)(4a28a9b) 9x2(2x28x5)(8x7) 8y2(9x2y)( x27y2) 1(4x23xyx)(3x28xy2x) 5 5 3(xy y25)(x2xy5y28) 6 4 9 5(xyy)(xyx4) 8 4 ( y6x3z2)(5y6x8z2) (9k28k)(7k2 k4) (4a22a5b)(2a22a b) 3x2(7x25x8)(3x5) 3y2(2x2y)(7x24y2) 1(7x25xyx)(5x23xy8x) 5 3 7(xy2y24)(x2xy4y28) 4 8 1 7(xyy)(xyx2) 3 8 (7y9x z2)(8

12、y7x5z2) (6k25k)(3k2 k4) (7a26a4b)(4a29a8b) x2(6x26x9)( x4) 5y2(7x2y)(6x27y2) 1(7x27xyx)(3x24xy4x) 8 1 7(xy2y23)(x2xy4y22) 7 8 7 1(xyy)(xyx7) 6 7 (5y2x2z2)(3y x9z2) ( k24k)(8k22k2) (4a27a9b)(7a27a8b) 9x2(9x2 x6)(4x7) 9y2(9x2y)(3x24y2) 8(9x24xyx)(7x25xy4x) 7 7 4(xy6y25)(x2xy6y22) 8 3 2 2(xyy)(xyx7) 3

13、3 (6y8x z2)(2y3x3z2) (9k23k)(4k2 k9) (7a22a9b)(5a24a2b) 7x2(9x29x1)(5x8) 4y2(2x2y)(7x2 y2) 9( x23xyx)(7x25xy5x) 8 9 5(xy8y25)(x2xy7y28) 8 4 2 7(xyy)(xyx3) 3 8 (2y9x8z2)(2y8x2z2) (2k23k)(4k24k9) (3a24a2b)(4a28a2b) 6x2(3x25x7)(7x6) 3y2(3x2y)(8x27y2) 2(7x27xyx)(2x22xy8x) 3 1 4(xy4y26)(x2xy3y29) 4 3 8 3(xyy)(xyx1) 7 4 (9y4x9z2)(7y8x9z2)