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A. 3ï¼-10ï¼-4 B . 3ï¼-12ï¼-2
C. 8ï¼-10ï¼-2 D. 8ï¼-12ï¼4
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7ã æ¹ç¨(5x-2)(x-7)=9(x-7)ç解æ¯_________
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11ã æ¹ç¨2ï¼xï¼3ï¼ =72ç解æ¯__________
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13ã æ¹ç¨2x(x-3)=0ç解æ¯__________
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2 D
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4 A
5 A
6 m-n-p
7 x = 2.2æ7
8 1/2
9 3
10 x = 1æ-1
11 x = 39
12 x= -1æ3
13 x = 0æ3
14 x = 1æ-2
15 x = 1/2(3±â53ï¼ â53æ¯æ ¹å·ä¸53çææ
16 0æ24
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