1、七年级数学下册整式的加减法计算题 250 (5m25m4)(7m6n3) (4x27x3)5(3x29x) 3(x21)7(x29) (x2y8xy7)2(x2y5xy8) 7 1(x223x16y)(x219x10y) 8 8 1 1(6k34k24)(8k3 k26k) 2 5 ( m29m1)( m4n1) (7x2 x8)6(6x26x) 5(x21)3(x29) (x2y7xy4)2(x2y6xy2) 4 4(x220x18y)(x211x29y) 5 5 1 1(9k38k26)(8k33k26k) 6 3 (9m23m6)(3m2n5) (9x24x2)4(9x28x) 5(x2
2、4)4(x29) (x2y6xy2)3(x2y9xy2) 1 1(x220x20y)(x216x22y) 3 3 1 1(3k36k25)(5k35k28k) 4 6 (7m24m4)(8m8n5) (8x28x5)9(5x25x) 5(x23)6(x23) (x2y2xy4)2(x2y5xy9) 9 7(x222x15y)(x214x11y) 8 8 1 1(9k37k29)(3k34k24k) 2 3 (3m22m2)(3m n9) ( x29x3)4(4x26x) 3(x29)8(x21) (x2y8xy9)7(x2y4xy5) 4 1(x212x15y)(x219x29y) 3 3 1
3、 1(9k35k24)(4k37k26k) 4 5 (3m2 m8)(7m n9) (6x29x2)9(3x26x) 7(x22)9(x26) (x2y9xy9)5(x2y2xy5) 3 1(x228x20y)(x219x24y) 4 4 1 1(6k32k29)(2k34k25k) 6 5 (2m22m9)(8m5n7) (6x23x3)7( x23x) 4(x23)2(x24) (x2y2xy5)8(x2y4xy7) 1 1(x230x17y)(x216x13y) 6 6 1 1(5k37k22)(4k37k21k) 4 2 (9m29m3)(6m2n6) (8x22x2)5(5x29x) 3(x23)9(x22)