合并同类项综合练习题67.docx

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合并同类项综合练习题67.docx

合并同类项综合练习题67

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1875

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29a2b-6b2c-18a2b-4b2c7x+7x2+7x-2x2+4

2175

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3636

7

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1975

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1975

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9

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4175

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5757

4

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5

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1975

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1

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10a2b+6y2z+11a2b-9y2z9m-6m2-2m-12m2+3

4875

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3737

8

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1175

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2727

7

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6

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6a2b+9b2c+23a2b+9b2c6x+9x2+8x-3x2-6

1775

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2828

5

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4

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