七年级数学下册计算题大全138.docx

1、七年级数学下册计算题大全138 9(7x22xyx)(4x28xy3x) 8 7 1(xy3y24)(x2xy9y27) 8 4 6 6(xyy)(xyx5) 7 7 (7y3x9z2)(8y8x9z2) (2k22k)(7k22k9) (6a23a5b)(2a24a3b) 9x2(8x24x1)(5x5) 3y2(7x2y)(5x22y2) 1(5x24xyx)(7x25xy9x) 6 2 1(xy9y24)(x2xy2y21) 3 6 1 8(xyy)(xyx3) 4 7 (3y8x4z2)( y6x5z2) (8k29k)(4k25k8) ( a27a6b)(9a26a5b) x2(6x

2、29x2)(6x2) 2y2( x2y)( x2 y2) 1(5x22xyx)(3x28xy4x) 3 1 2(xy8y25)(x2xy9y22) 7 3 1 8(xyy)(xyx6) 7 7 (9y7x4z2)(5y8x6z2) (7k26k)(8k28k6) (6a26a8b)( a27a5b) 5x2(2x22x1)(9x4) 6y2(8x2y)(4x23y2) 6(9x22xyx)(9x27xy5x) 5 4 1(xy3y27)(x2xy8y27) 5 7 9 6(xyy)(xyx5) 8 5 (2y5x5z2)(7y6x z2) ( k27k)(5k27k3) (7a28a5b)(3

3、a24a2b) 4x2( x29x2)(7x6) 2y2(3x2y)(7x29y2) 5( x2 xyx)(6x23xy3x) 4 1 9(xy2y22)(x2xy3y21) 5 8 5 4(xyy)(xyx1) 6 3 (3y6x8z2)(4y4x9z2) (2k26k)( k24k1) (2a29a3b)( a23a2b) 5x2(7x29x6)(4x1) 2y2( x2y)(4x2 y2) 1(3x27xyx)(6x2 xy2x) 3 6 1(xy7y25)(x2xy8y22) 5 7 1 7(xyy)(xyx4) 6 6 (2y9x4z2)(3y3x4z2) (6k29k)(5k26k

4、2) (9a22a5b)(3a26a4b) 9x2(3x25x5)(3x9) 4y2(2x2y)(2x26y2) 9(6x25xyx)(9x23xy4x) 8 3 1(xy4y27)(x2xy6y21) 4 6 6 7(xyy)(xyx2) 7 6 (2y7x z2)(4y9x6z2) (9k25k)(8k29k5) (7a25a7b)( a28a3b) 4x2(6x22x1)(5x8) y2( x2y)(9x24y2) 1(9x24xyx)(3x28xy5x) 4 1 3(xy6y28)(x2xy4y23) 5 4 6 5(xyy)(xyx5) 5 6 ( y x2z2)(3y8x7z2)

5、( k22k)(4k28k5) (3a27a5b)(2a25a5b) 9x2(9x29x3)( x3) 9y2(7x2y)(3x25y2) 5(7x25xyx)( x25xy x) 4 6 6(xy3y29)(x2xy5y22) 5 7 1 6(xyy)(xyx1) 8 7 (2y8x8z2)(6y6x6z2) (9k2 k)(2k24k8) (8a22a2b)( a24a6b) 5x2(3x25x6)(8x2) 3y2(6x2y)(7x22y2) 5( x24xyx)(4x22xy3x) 6 1 3(xy y21)(x2xy8y27) 5 4 7 6(xyy)(xyx4) 8 7 (2y9x

6、3z2)( y3x3z2) (6k22k)(3k29k3) (9a27a6b)(9a22a7b) 2x2(7x27x1)(9x4) 9y2(6x2y)(3x28y2) 1(4x25xyx)(3x28xy3x) 8 1 4(xy2y22)(x2xy9y22) 4 5 1 5(xyy)(xyx9) 5 6 (3y8x7z2)(3y6x2z2) (3k27k)(8k28k7) (7a23a b)( a23a5b) 8x2(6x23x7)( x4) 7y2(9x2y)(2x23y2) 7(7x25xyx)(7x23xy4x) 6 6 1(xy5y28)(x2xy7y26) 7 3 1 2(xyy)(xyx5) 3 3 (4y8x z2)(7y7x7z2) (8k26k)(5k2 k5) (8a23a7b)(9a2 a9b) 5x2(9x2 x5)(3x5) 4y2(2x2y)(4x24y2) 6(6x28xyx)(9x2 xy3x) 5 1 1(xy8y28)(x2xy2y21) 8 8 6 6(xyy)(xyx1) 5 7 (4y3x5z2)(4y2x6z2)