北师大版七年级数学下册整式的加减法计算题精选 432.docx

1、北师大版七年级数学下册整式的加减法计算题精选 432 (6k29k)(7k22k1) (2a2 a8b)(5a2 a7b) 7x2(2x28x5)(2x1) 9y2(7x2y)(4x28y2) 7(7x25xyx)(7x27xy4x) 8 1 1(xy2y25)(x2xy2y21) 6 8 6 2(xyy)(xyx2) 7 3 (6y x4z2)(8y9x9z2) (2k28k)(5k25k1) (6a24a7b)(8a29a5b) 8x2(4x28x1)(3x1) 5y2(2x2y)(4x26y2) 4(9x25xyx)(5x22xy x) 3 7 6(xy9y21)(x2xy2y26) 6

2、 7 1 1(xyy)(xyx6) 4 4 (6y4x6z2)(9y2x3z2) (8k27k)(8k25k3) (7a28a8b)(2a27a3b) 7x2(7x23x7)(8x6) 9y2(8x2y)(8x28y2) 1(2x28xyx)(5x23xy2x) 7 1 5(xy2y29)(x2xy9y27) 7 6 1 1(xyy)(xyx9) 4 6 ( y6x3z2)(9y2x7z2) (8k25k)(2k27k2) (4a27a7b)(8a26a4b) 9x2(9x26x5)(9x9) 2y2( x2y)(5x24y2) 1(9x26xyx)(2x23xy9x) 8 1 2(xy3y2

3、1)(x2xy6y28) 5 3 7 1(xyy)(xyx4) 6 5 (5y3x3z2)(2y3x7z2) (3k25k)(7k28k1) (6a29a5b)(4a26a7b) 3x2(6x26x2)(4x2) 8y2( x2y)(3x2 y2) 2(8x22xyx)(7x23xy9x) 3 9 4(xy7y23)(x2xy6y23) 8 3 5 1(xyy)(xyx9) 6 6 (8y8x6z2)(9y7x6z2) (6k25k)(7k26k7) (9a22a7b)(5a24a3b) 4x2(4x22x7)(4x8) 6y2(4x2y)(4x24y2) 6( x25xyx)(2x22xy x) 7