七年级数学下册整式的加减法计算题 423.docx

1、七年级数学下册整式的加减法计算题 423 (x2y7xy3)8(x2y7xy7) 1 7(x220x12y)(x210x23y) 6 6 1 1(9k33k26)(5k34k22k) 2 5 (4m25m5)(6m8n7) (6x25x6)5(8x2 x) 6(x26)5(x24) (x2y2xy3)2(x2y8xy5) 7 1(x218x20y)(x219x29y) 8 8 1 1(6k34k21)(4k35k23k) 6 4 (4m27m9)(3m8n8) (5x28x5)9(9x27x) 5(x22)4(x24) (x2y7xy7)8(x2y8xy7) 4 1(x222x13y)(x21

2、8x24y) 3 3 1 1(4k33k26)(9k33k21k) 2 4 (5m23m5)(7m4n4) (3x27x6)9( x26x) 3(x21)7(x26) (x2y7xy9)5(x2y8xy6) 1 1(x210x19y)(x216x22y) 7 7 1 1(4k35k24)(2k39k28k) 6 4 (6m27m1)(8m7n2) (7x23x8)9( x27x) 5(x29)6(x21) (x2y8xy9)5(x2y8xy3) 8 8(x212x18y)(x220x14y) 7 7 1 1(8k37k24)(7k38k24k) 4 6 (3m27m5)(8m9n1) (2x2

3、7x1)4(6x22x) 5(x26)3(x23) (x2y7xy4)3(x2y8xy6) 5 1(x221x15y)(x219x18y) 6 6 1 1(8k34k28)(5k3 k24k) 2 2 ( m24m5)(6m2n6) (7x27x8)8(8x27x) 6(x21)5(x28) (x2y5xy2)7(x2y2xy3) 1 1(x215x11y)(x216x15y) 7 7 1 1(5k37k25)(8k37k22k) 6 2 (8m26m4)(8m2n4) (7x23x7)3(5x29x) 4(x27)5(x26) (x2y8xy8)7(x2y6xy2) 1 7(x214x20y)(x216x26y) 6 6 1 1(8k33k27)(2k32k26k) 6 4