1、七年级数学下册整式的加减法练习题精选强烈推荐 203 (9y8x2z2)( y3x6z2) (7m23m3)(2m3n2) (4x26x8)3(4x25x) 4(x25)7(x24) (x2y8xy9)4(x2y4xy6) 5 1(x216x20y)(x214x24y) 6 6 1 1(9k35k22)(8k37k24k) 4 2 (8k25k)(9k24k4) (7a2 a9b)(2a22a2b) 6x2(8x2 x5)(5x8) 4y2(8x2y)( x22y2) 1(8x2 xyx)(5x23xy4x) 6 3 1(xy6y24)(x2xy4y21) 4 4 1 8(xyy)(xyx6)
2、 7 7 (7y2x8z2)(7y4x7z2) ( m2 m9)(8m n8) (5x28x7)3(7x2 x) 9(x28)3(x21) (x2y6xy7)2(x2y5xy7) 7 1(x218x18y)(x211x12y) 8 8 1 1(7k34k27)(2k32k22k) 2 6 (8k24k)(3k26k8) (5a23a6b)( a28a9b) 7x2(4x27x5)(4x6) 7y2(3x2y)(3x2 y2) 1(8x27xyx)(7x2 xy8x) 5 3 7(xy2y25)(x2xy2y26) 4 8 4 1(xyy)(xyx4) 3 3 (5y2x3z2)(7y8x8z2
3、) (7m28m2)(5m5n8) (8x25x6)4(8x22x) 5(x29)8(x26) (x2y2xy9)8(x2y4xy3) 1 3(x230x13y)(x215x27y) 4 4 1 1(8k32k23)(2k35k24k) 2 2 (5k28k)(6k22k5) (6a29a7b)( a2 a7b) 8x2(7x24x1)(7x8) 6y2(3x2y)(5x28y2) 9(8x2 xyx)(8x29xy2x) 8 1 5(xy5y28)(x2xy5y22) 7 6 7 5(xyy)(xyx3) 6 6 (3y8x4z2)(8y8x7z2) (7m24m7)(5m5n3) (6x22x5)8(8x2 x)