1、初中数学七年级下册计算题精选441 (5k24k)(7k25k8) (2a26a8b)(4a29a8b) 4x2(5x25x1)(8x7) 5y2(7x2y)(6x27y2) 1(8x24xyx)( x22xy4x) 7 1 8(xy9y28)(x2xy6y28) 8 7 8 1(xyy)(xyx1) 7 7 (9y2x z2)(4y9x4z2) (5k26k)(4k22k2) (5a29a6b)(2a25a9b) 9x2(5x26x4)(9x3) 6y2(4x2y)( x24y2) 5(6x28xyx)( x2 xy5x) 6 1 6(xy7y28)(x2xy7y25) 8 7 1 6(xy
2、y)(xyx3) 7 7 (3y5x9z2)(7y2x3z2) (8k27k)(2k25k7) (8a2 a9b)(2a27a b) x2(6x26x1)(5x8) 3y2(8x2y)( x24y2) 6( x29xyx)(6x26xy7x) 7 9 1(xy4y28)(x2xy6y21) 8 5 1 1(xyy)(xyx2) 6 8 (6y7x6z2)(9y3x9z2) (8k23k)(8k22k3) (4a26a b)(3a2 a9b) 6x2( x28x4)(4x1) 2y2(4x2y)(3x27y2) 4(9x22xyx)( x25xy2x) 5 1 6(xy5y27)(x2xy9y2
3、8) 5 5 1 8(xyy)(xyx3) 3 7 (8y4x6z2)(3y2x6z2) (4k29k)(8k28k9) (8a22a4b)(3a24a4b) 3x2(9x24x3)( x7) 6y2(2x2y)(5x23y2) 5(9x26xyx)(6x24xy8x) 6 3 7(xy y26)(x2xy6y22) 4 6 5 1(xyy)(xyx4) 6 8 (9y2x2z2)(2y6x4z2) (9k2 k)(6k25k6) (9a29a9b)(5a23a6b) 3x2( x2 x6)(2x7) 9y2(6x2y)(9x2 y2) 5(2x27xyx)(3x27xy5x) 6 5 8(xy8y24)(x2xy4y25) 4 7 1 8(xyy)(xyx9) 5 7 (6y3x5z2)(4y6x2z2) (5k28k)(4k2 k2) (5a29a2b)(6a26a7b)