1、北师大版七年级数学下册整式的加减法计算题精选 2491 7(xy3y26)(x2xy9y28) 3 6 6 1(xyy)(xyx9) 7 7 (9y3x3z2)(3y2x4z2) (7k2 k)( k25k1) (7a24a2b)(7a23a b) 5x2( x23x5)(3x8) 8y2(9x2y)( x25y2) 1(6x28xyx)( x2 xy2x) 8 4 6(xy4y29)(x2xy6y24) 3 7 4 9(xyy)(xyx8) 3 8 (6y6x2z2)(7y6x6z2) (3k22k)(6k28k3) (4a25a5b)(4a2 a3b) x2(9x25x5)(6x5) 3y
2、2(2x2y)(2x23y2) 1(8x27xyx)(2x23xy3x) 8 7 1(xy2y23)(x2xy4y25) 6 5 7 5(xyy)(xyx8) 8 4 (7y2x z2)(2y5x2z2) (2k28k)(2k28k9) (7a2 a7b)(4a26a5b) 7x2(3x29x9)(3x4) 7y2(9x2y)(5x22y2) 2(6x24xyx)(8x2 xy3x) 3 4 6(xy9y22)(x2xy6y23) 3 7 8 1(xyy)(xyx4) 7 7 (4y5x2z2)(3y5x z2) (6k28k)(7k22k6) (9a28a3b)(2a24a5b) 3x2(2
3、x2 x4)(2x2) 2y2(4x2y)(9x23y2) 4(4x27xyx)( x2 xy7x) 3 7 1(xy4y28)(x2xy8y22) 8 6 8 1(xyy)(xyx7) 7 4 ( y7x2z2)(2y5x5z2) (5k26k)(6k27k5) (3a29a9b)( a24a2b) x2(3x22x2)(8x2) 9y2(8x2y)(8x22y2) 1(7x29xyx)(2x23xy8x) 8 7 8(xy8y28)(x2xy3y28) 6 7 7 1(xyy)(xyx4) 6 4 (5y3x5z2)(5y8x4z2) (8k28k)(7k23k5) (6a22a2b)(6a27a6b)