1、七年级数学下册整式的加减法练习题精选强烈推荐 65 1 1(4k36k29)(9k32k29k) 2 6 (2k28k)( k22k6) (6a28a5b)(8a28a3b) 3x2(3x25x4)(9x8) 6y2(3x2y)(9x29y2) 9(4x2 xyx)(6x23xy5x) 8 7 1(xy8y27)(x2xy6y29) 8 7 1 7(xyy)(xyx4) 4 6 (4y2x z2)(3y8x z2) (7m25m6)(7m8n1) (2x24x5)6(7x24x) 8(x23)8(x23) (x2y6xy3)9(x2y8xy6) 1 1(x210x15y)(x215x27y)
2、7 7 1 1(7k35k25)(5k35k26k) 6 6 (6k24k)(9k25k1) (2a23a9b)(7a29a6b) 2x2(2x29x1)(5x4) 6y2(5x2y)(3x23y2) 1(9x28xyx)(6x29xy6x) 4 1 1(xy2y29)(x2xy2y24) 8 8 4 7(xyy)(xyx6) 5 6 (3y7x z2)(9y6x3z2) (8m23m2)(2m8n4) (8x22x2)9(5x23x) 8(x23)9(x28) (x2y4xy7)2(x2y6xy3) 2 1(x221x20y)(x216x27y) 3 3 1 1(2k37k27)(6k35k
3、21k) 2 2 (5k23k)(3k24k6) (5a24a b)(7a25a b) 6x2(4x23x7)(5x1) 2y2( x2y)(8x28y2) 2(8x2 xyx)(6x27xy x) 3 8 1(xy8y24)(x2xy3y22) 7 3 8 3(xyy)(xyx9) 7 4 ( y9x4z2)(5y6x8z2) (3m26m2)(4m6n2) (2x27x1)9(6x24x) 4(x29)6(x28) (x2y7xy6)8(x2y5xy2) 8 1(x228x11y)(x218x27y) 7 7 1 1(5k36k26)(2k36k29k) 2 3 (7k25k)(2k2 k2) (5a23a3b)(3a22a7b)
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