七年级数学下册计算题大全87.docx

1、七年级数学下册计算题大全87 (8k22k)(6k22k7) (3a24a7b)(8a24a5b) 8x2(6x28x4)(7x3) 3y2(4x2y)(5x28y2) 1(6x23xyx)(2x23xy8x) 7 7 1(xy7y25)(x2xy y27) 8 3 4 1(xyy)(xyx5) 5 7 ( y5x7z2)(5y9x9z2) (2k24k)( k26k2) (5a27a b)(9a25a5b) 9x2(9x24x9)(5x3) 3y2(6x2y)( x23y2) 1(2x23xyx)(6x25xy6x) 4 6 1(xy4y27)(x2xy3y21) 5 7 2 2(xyy)(

2、xyx5) 3 3 (6y4x6z2)(5y4x9z2) (6k27k)(8k27k7) (8a23a9b)(9a24a2b) x2(6x29x3)(4x5) 6y2(6x2y)(7x22y2) 1( x28xyx)(5x25xy3x) 5 1 1(xy3y24)(x2xy8y22) 3 4 3 4(xyy)(xyx8) 4 5 ( y8x5z2)(3y x3z2) (7k22k)(3k23k6) (8a2 a5b)( a2 a4b) 6x2(8x25x3)(6x6) 4y2( x2y)(2x25y2) 5(6x22xyx)(8x27xy6x) 4 1 1(xy6y21)(x2xy y23)

3、6 7 6 5(xyy)(xyx8) 5 4 (5y6x3z2)(2y8x7z2) (8k28k)( k25k3) (9a29a7b)(8a29a2b) x2(2x23x7)(2x4) 4y2( x2y)(3x24y2) 6(3x22xyx)(2x2 xy3x) 5 1 7(xy4y28)(x2xy9y21) 7 6 1 8(xyy)(xyx8) 8 7 (9y7x2z2)(6y5x2z2) (4k2 k)(2k28k9) (9a23a7b)( a28a9b) 6x2(2x24x2)(7x6) 5y2(2x2y)(3x26y2) 1(3x26xyx)(5x23xy6x) 5 7 7(xy4y2

4、7)(x2xy y24) 8 6 3 7(xyy)(xyx1) 4 8 (9y8x8z2)(6y9x8z2) (7k25k)(9k23k3) (8a29a8b)( a25a8b) 7x2(8x28x6)(7x3) 8y2(4x2y)(2x2 y2) 6( x24xyx)(5x29xy3x) 5 1 2(xy2y27)(x2xy3y24) 3 3 8 4(xyy)(xyx8) 7 5 (5y5x z2)(8y2x3z2) (5k24k)( k27k7) (6a23a2b)(9a29a9b) 2x2(4x28x2)(5x8) 9y2(3x2y)(6x22y2) 4(6x23xyx)(7x22xy2

5、x) 3 5 7(xy5y29)(x2xy y24) 4 6 1 1(xyy)(xyx5) 8 7 (8y9x8z2)(6y6x z2) (2k26k)(8k28k1) (4a22a4b)(2a29a6b) 4x2(2x29x6)(5x9) 9y2(4x2y)(2x28y2) 4(8x23xyx)(2x23xy x) 3 1 9(xy2y26)(x2xy5y22) 3 8 5 2(xyy)(xyx3) 4 3 (6y7x z2)(9y9x9z2) ( k25k)(3k26k5) (8a26a6b)(4a29a9b) 4x2(3x26x3)(2x8) 6y2(7x2y)(4x27y2) 9(4x

6、26xyx)(7x24xy9x) 8 4 4(xy9y22)(x2xy2y24) 5 5 1 1(xyy)(xyx1) 3 3 (3y7x4z2)(7y2x8z2) ( k26k)(7k2 k7) (3a27a5b)(4a29a9b) 9x2(7x24x6)(4x4) 2y2(3x2y)(5x22y2) 6(3x28xyx)(5x22xy4x) 5 1 1(xy4y29)(x2xy y23) 8 4 1 1(xyy)(xyx6) 5 6 (7y x4z2)(2y5x2z2) (8k28k)( k26k3) ( a29a7b)(7a2 a b) 9x2(3x27x1)(2x3) 4y2(4x2y)(4x22y2) 7(4x23xyx)(6x23xy4x) 8 1 5(xy y23)(x2xy4y28) 8 6 1 7(xyy)(xyx1) 4 6 (9y2x6z2)(8y7x7z2) (9k26k)(7k28k4) (8a23a3b)( a26a b) 8x2(8x28x9)(8x7) 5y2(4x2y)(7x27y2)