七年级数学下册整式的加减法练习题精选强烈推荐 288.docx

1、七年级数学下册整式的加减法练习题精选强烈推荐 288 3(x24)8(x25) (x2y3xy9)5(x2y3xy7) 1 1(x230x11y)(x219x26y) 4 4 1 1(8k38k25)(4k3 k26k) 4 6 (3k26k)(4k22k6) (3a23a b)(7a24a6b) 6x2( x22x5)(9x9) 7y2(3x2y)(5x26y2) 3(3x22xyx)(5x22xy5x) 4 5 1(xy3y28)(x2xy4y23) 6 6 4 1(xyy)(xyx7) 3 8 (9y3x7z2)(8y5x7z2) (7m29m9)( m9n1) ( x24x6)8(8x

2、2 x) 8(x29)6(x27) (x2y3xy9)2(x2y6xy7) 7 1(x226x14y)(x211x27y) 6 6 1 1(8k39k24)(5k37k22k) 6 3 (5k27k)(5k22k7) (3a25a7b)(8a26a b) 8x2( x2 x5)(9x2) 2y2(9x2y)( x2 y2) 1(7x23xyx)(7x26xy8x) 3 5 4(xy5y23)(x2xy y26) 4 3 2 6(xyy)(xyx3) 3 7 (5y6x3z2)(4y3x6z2) (7m29m1)(2m2n9) (2x27x5)9( x29x) 4(x24)6(x24) (x2y

3、2xy5)5(x2y7xy3) 6 1(x218x13y)(x212x22y) 5 5 1 1(3k39k21)(9k33k23k) 2 3 ( k26k)(8k26k4) ( a23a4b)(5a22a7b) 6x2(5x28x4)(5x5) 8y2(8x2y)( x29y2) 6(9x27xyx)(5x2 xy3x) 5 1 1(xy8y21)(x2xy3y29) 5 4 1 1(xyy)(xyx9) 4 4 (4y2x9z2)(2y5x z2) (2m29m2)(2m8n9) (7x26x3)2(4x26x) 7(x24)8(x23) (x2y6xy9)2(x2y2xy3) 2 4(x222x17y)(x218x22y) 3 3