七年级数学下册整式的加减法练习题精选强烈推荐 211.docx

1、七年级数学下册整式的加减法练习题精选强烈推荐 211 7y2(4x2y)(8x23y2) 6(9x26xyx)(7x29xy2x) 5 4 1(xy2y22)(x2xy y26) 3 3 4 1(xyy)(xyx3) 5 4 (5y7x8z2)(8y3x2z2) (7m2 m9)(2m9n5) (3x23x6)7(8x23x) 7(x25)3(x25) (x2y7xy2)8(x2y3xy4) 8 6(x220x17y)(x214x18y) 7 7 1 1(8k33k23)(3k35k23k) 4 3 (7k28k)( k23k4) (6a23a9b)(3a22a6b) 4x2(5x28x7)(

2、6x2) 7y2(2x2y)(8x29y2) 6( x29xyx)(8x2 xy9x) 7 1 1(xy7y22)(x2xy8y28) 4 8 6 1(xyy)(xyx4) 7 8 (9y5x8z2)(3y7x3z2) (8m22m3)(2m4n1) (9x2 x9)4(2x28x) 6(x22)5(x29) (x2y5xy3)4(x2y6xy8) 1 4(x220x10y)(x210x11y) 3 3 1 1(9k35k24)(7k32k26k) 6 3 (8k26k)(4k26k8) (9a29a2b)(5a27a4b) 5x2(6x2 x3)( x1) 9y2(9x2y)(4x28y2)

3、 4(5x29xyx)(5x29xy5x) 5 4 9(xy y25)(x2xy y23) 3 8 1 7(xyy)(xyx4) 7 6 (7y8x9z2)(8y7x6z2) (7m26m3)(7m n6) (7x2 x4)3(5x28x) 4(x26)9(x24) (x2y6xy5)6(x2y9xy4) 9 1(x218x19y)(x220x22y) 8 8 1 1(6k37k23)( k34k29k) 6 2 (6k25k)(7k23k6) (6a22a3b)(4a27a8b) 6x2(9x25x1)(8x9) 7y2(3x2y)(8x25y2) 1(7x2 xyx)(8x26xy4x) 4 8 1(xy4y22)(x2xy3y21) 7 5