七年级数学下册整式的加减法练习题精选强烈推荐 407.docx

1、七年级数学下册整式的加减法练习题精选强烈推荐 407 2y2(5x2y)(3x28y2) 6(2x28xyx)(8x24xy7x) 5 6 5(xy9y25)(x2xy4y28) 7 4 5 1(xyy)(xyx8) 6 5 (7y9x8z2)(6y5x2z2) (3m28m7)(8m6n3) (8x24x4)4(4x25x) 9(x24)2(x24) (x2y9xy4)3(x2y7xy7) 1 6(x213x13y)(x215x21y) 5 5 1 1(9k3 k27)(9k38k28k) 2 6 (5k24k)(7k29k6) (8a27a3b)( a29a4b) 2x2(8x28x8)(

2、5x4) 2y2( x2y)(5x2 y2) 2(4x22xyx)(9x22xy2x) 3 1 7(xy4y21)(x2xy4y24) 4 6 4 5(xyy)(xyx4) 3 4 (3y6x9z2)(7y9x7z2) ( m24m2)(7m3n2) (7x26x6)9(5x28x) 9(x28)5(x29) (x2y7xy5)9(x2y4xy7) 1 5(x224x10y)(x211x28y) 6 6 1 1(8k39k24)(7k3 k29k) 4 4 (6k26k)(9k23k7) (9a28a7b)(6a24a5b) 2x2(9x29x7)(9x8) y2(9x2y)(6x2 y2)

3、2(8x26xyx)(8x26xy x) 3 4 1(xy7y25)(x2xy y29) 5 5 1 3(xyy)(xyx5) 4 4 (6y8x3z2)(6y4x2z2) (4m27m7)(5m7n3) (7x23x5)4(9x22x) 9(x21)3(x24) (x2y5xy3)9(x2y8xy9) 4 4(x225x18y)(x215x21y) 3 3 1 1(2k33k27)(8k34k26k) 4 3 (9k25k)(7k26k2) (5a29a4b)(8a23a8b) 9x2(4x26x5)(3x9) 9y2(8x2y)(7x25y2) 4(4x28xyx)(8x2 xy3x) 3 7 5(xy4y21)(x2xy3y27) 8 4