合并同类项综合练习题123.docx
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合并同类项综合练习题123.docx
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合并同类项综合练习题123
3d+8d-8d2n+6c-8n+8c
2b-5d-17b-15d+12b+20d4pq-20pq-17pq+pq
30x2y-3b2c-12x2y+4b2c2x+9x2+5x-10x2-2
4775
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3636
6
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7
4a-3a+8a2y+3b+8y+4b
4a-8n+20a-11n-17a-16n5mn+9mn-18mn-mn
11x2y+6y2z+18x2y-4y2z9n+7n2+8n-6n2+4
4975
—x+—t-—t-—x3t2-8xy+3t2+8
5858
5
—ab+9m+6ab7ab-9a2b-3ab+6ab
4
9e+3e+2e5y-7a-6y+8a
9b-3n+10b-16n+19b+19n5mn-5mn-12mn-mn
22x2y-7b2c+11x2y-3b2c6n-2n2+7n+13n2-7
3175
—m-—y+—y+—m5m2+3mn-6m2-8
4646
5
—xy+5n-3xy2mn-20a2b+10mn+19mn
6
8f-6f-6f9x-4a+8x+7a
2a+2d+15a+15d-18a-13d5ab-4ab-19ab+ab
2a2b+2b2c+21a2b+6b2c7y-6y2-2y+18y2+6
1175
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2727
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5
8f+7f+9f4y+8c+2y+6c
8a-9n+7a-4n+10a-12n8xy+18xy-19xy+xy
3a2b-4y2z-28a2b-7y2z9m+7m2+6m-3m2+2
3575
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2626
5
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6
7d-5d-4d10x+6f-4x+5f
8a+6n+12a+16n-18a-11n9mn+6mn+15mn-mn
5x2y+5b2c-25x2y-4b2c5x+4x2+7x+3x2+6
1775
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7e-3e-6e7t-8b+2t-7b
4a-9d-19a-19d+16a-13d3xy+15xy-18xy+xy
15x2y+2y2z-26x2y+7y2z2x+7x2-4x+14x2+9
1175
—m-—y+—y+—m12t2+5xy+8t2+8
4747
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—mn+8t+3mn5mn+15x2y-12mn-4mn
4
7a-2a+6a7z+6b+3z-10b
3m+2d+3m+12d-20m+13d2mn-2mn-15mn+mn
11x2y+8y2z-25x2y-7y2z5x-2x2-2x+19x2+3
6875
—z+—y-—y-—z15z2-8ab+5z2+9
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2b+7c-5b+16c-14b-14c2ab-9ab+19ab+ab
16x2y+6b2c-24x2y-2b2c8m-5m2+8m-4m2+1
1575
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6b-9c+17b-13c+20b-17c5ab+15ab+13ab+ab
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6875
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3
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