1、七年级数学下册整式的加减法计算题 256 (9m22m3)(9m2n3) ( x28x6)2(7x2 x) 7(x23)2(x29) (x2y4xy6)7(x2y4xy2) 4 1(x225x14y)(x216x27y) 3 3 1 1(7k33k21)(5k38k23k) 2 5 ( m23m7)(4m9n2) (9x28x5)9(6x2 x) 6(x23)6(x29) (x2y7xy9)4(x2y2xy7) 2 2(x217x18y)(x220x27y) 3 3 1 1(3k37k28)(7k39k24k) 2 3 ( m24m5)(2m7n5) (9x24x3)8(8x29x) 2(x2
2、7)6(x23) (x2y5xy4)2(x2y9xy7) 9 9(x230x19y)(x214x14y) 8 8 1 1(6k36k25)(7k37k24k) 4 2 (4m28m6)(3m7n4) (5x26x6)6(5x23x) 7(x28)4(x24) (x2y2xy2)7(x2y6xy8) 1 6(x226x14y)(x219x22y) 5 5 1 1( k35k25)(4k3 k29k) 4 4 (7m22m7)( m5n9) (8x29x7)7(5x24x) 5(x25)7(x22) (x2y7xy5)4(x2y7xy9) 4 1(x230x17y)(x220x10y) 5 5 1
3、 1(4k32k27)(4k36k29k) 2 3 (8m26m1)(7m6n8) (8x22x5)9( x2 x) 5(x26)7(x25) (x2y2xy9)8(x2y9xy6) 1 9(x217x18y)(x215x28y) 8 8 1 1( k33k27)(7k38k24k) 4 4 (3m22m6)(8m7n2) (3x24x2)3(7x28x) 8(x28)2(x26) (x2y8xy5)6(x2y4xy2) 7 9(x224x18y)(x213x21y) 8 8 1 1(8k33k29)(8k33k25k) 2 4 (9m29m4)(6m3n3) (7x25x4)7( x27x) 7(x25)8(x25)