合并同类项综合练习题69Word文件下载.docx
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2727
1
—ab-9z+2ab7xy+15x2y+12xy-21xy
7
8c+8c+2c9x-7f-4x+9f
3a-8d+6a+5d+13a-16d3ab-10ab-17ab+ab
17a2b+5b2c-6a2b+6b2c4t-6t2+4t-12t2-2
1675
—x-—n+—n+—x6m2-9ab-7m2-3
4747
—mn-9x-3mn3mn+18x2y+6mn-12mn
2
7a-2a-6a7t-4b-4t-2b
3b+6n+8b+2n+19b+20n7xy-20xy-12xy-xy
15x2y+5b2c+4x2y+2b2c6y+2y2-9y+3y2-7
1775
—x-—n-—n+—x16x2-8mn-9x2+2
2828
—ab-5m-2ab5xy+9x2y-6xy-24xy
7f+8f+2f9t-8b-6t-9b
2a+8n-7a-11n-15a-14n7xy+18xy-19xy+xy
10a2b-6y2z-2a2b+4y2z7z-8z2+9z+10z2+4
—x+—t+—t+—x17z2-9mn-9z2-6
2626
6
—pq-3x+3pq8pq+11x2y-15pq-6pq
5
2e+8e-8e5t+2a+2t-9a
9a+2d+4a-5d+20a-19d2xy+15xy+12xy+xy
15a2b-9b2c+25a2b-9b2c4n-2n2-5n+17n2-3
1575
—m-—n+—n-—m8x2-9ab-3x2+3
—ab+3t-7ab7xy+8x2y-5xy+17xy
2c+7c-3c9x+2c-6x-10c
9m+7d-7m-12d-18m+20d3ab+5ab+19ab-ab
23x2y+6b2c-19x2y-8b2c5x+9x2+2x+10x2-5
3675
—z-—t-—t+—z16m2+3mn+6m2+5
—xy-4m+9xy6pq-9x2y-12pq+23pq
6c+8c+3c7n-2a+2n+3a
4a-9d-18a+4d-19a-20d6mn-12mn-14mn+mn
8a2b-8b2c+19a2b-3b2c7t-7t2+8t+2t2+2
4875
—m-—y-—y-—m2y2+3ab-8y2-6
3737
—xy-5x+8xy4mn-18x2y+5mn-22mn
8e-4e+9e2x+9b+6x+7b
8b+5d-12b+12d+11b+18d9mn+20mn-12mn+mn
26x2y-9y2z+27x2y-2y2z7n+2n2-9n+20n2-3
1975
—m+—t-—t-—m16n2+6mn+6n2+4
3
—ab+5n-8ab9mn-10x2y-15mn+6mn
4
9f-6f+8f2y-7f-7y-2f
3a+9c+20a-9c-19a-19c4ab-9ab+12ab-ab
8x2y-2b2c+2x2y-4b2c9z+7z2+7z-12z2-9
6875
—z+—t-—t+—z4t2+2mn+6t2+6
5757
—mn+5x+6mn9mn+16a2b+16mn-3mn
8
5c+3c-3c8n+7c-3n+8c
9m-7d+2m+5d-15m+19d8pq+2pq+17pq+pq
28a2b+3b2c-8a2b-6b2c4m-9m2+3m+20m2+5
5875
—z+—n+—n-—z11x2-3mn+8x2+3
—xy-9x-8xy5ab-13a2b+4ab+16ab