合并同类项综合练习题71文档格式.docx
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合并同类项综合练习题71文档格式.docx
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1
—ab+8t+2ab9mn+18x2y-5mn-4mn
3
2f+9f+5f6n-3e-5n-8e
8a+8d-14a-8d-17a+18d8xy+8xy+19xy-xy
20a2b-7y2z-17a2b+7y2z8m-5m2-3m+5m2+9
2875
—z-—y+—y-—z8t2+7pq-5t2+5
3737
4
—xy-7m-3xy6pq-17x2y-19pq-5pq
5
7f+4f+9f10t+9d-2t-4d
2b+4d+11b-17d-20b-10d3pq-8pq+18pq+pq
20a2b-5y2z+11a2b+4y2z7x+5x2-5x+6x2-6
1775
—z+—t+—t-—z9y2-7ab+3y2-3
3636
6
—mn+4t-7mn9xy+15a2b+6xy+15xy
4c+8c+8c2y+9c-2y-9c
9a-7d+14a+13d-15a+19d3xy+16xy+19xy-xy
5a2b-2y2z-19a2b-3y2z4y-2y2-8y+13y2-5
1575
—x+—y+—y-—x14m2-2mn-5m2+6
2626
—pq+6t-4pq5pq-18x2y-15pq-22pq
7
7d+5d+5d3z-6a-4z+5a
8b-8n-14b+11n+15b-10n3mn-17mn-15mn-mn
7a2b-5b2c+22a2b-4b2c2n+3n2-3n-6n2-8
5175
—z-—n+—n+—z15z2+5xy+5z2-2
4747
—ab+8n-2ab2mn+14a2b+12mn+16mn
2
3c+5c-2c4x+9d-9x+9d
6a-7c+5a+17c+16a+13c8pq+16pq-14pq-pq
24a2b-9b2c+3a2b-9b2c5z-3z2-3z-10z2-2
4675
—z-—y-—y-—z20m2-2xy-3m2-3
—mn-7m+2mn5xy-9x2y+13xy+19xy
8
5e-7e-2e8n-2f-6n+7f
2a+8n-5a+18n-12a+19n2ab-6ab+13ab+ab
7x2y+2y2z-26x2y-6y2z8t-8t2+3t+11t2+5
5775
—x+—t+—t+—x7z2+4xy+3z2+5
4646
—xy+9z+8xy5mn+8a2b+17mn+11mn
5b+6b+2b9y+3c-3y+6c
4b-3n+11b-20n+12b+17n5ab+15ab+15ab+ab
28x2y-5y2z-30x2y-7y2z2x-3x2+2x-2x2-7
4975
—x+—n-—n-—x9n2-6pq-6n2+1
3838
—mn+5m-8mn9xy+11x2y+20xy+5xy
7f+7f-7f3y+9f+3y-3f
2m+4c-5m+18c-11m+11c2xy-7xy-16xy-xy
20a2b-8b2c+15a2b-6b2c2t+5t2-5t-12t2+8
3675
—z-—y-—y-—z18n2+3ab+5n2+4
2727
—pq-6y+2pq6mn+19a2b+11mn+24mn
4d-9d+7d6m-2d+2m-8d
8b+7d+3b+20d+12b-20d9mn+10mn-11mn-mn
15a2b-5y2z+15a2b+8y2z8x+7x2-9x+9x2+1
2775
—x+—y+—y+—x6t2-8pq+7t2+5
—pq+8n-9pq2mn-9a2b+17mn-19mn
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