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Urgently ask for the answer to the Ningxia volume of science mathematics in the 20 1 1 year college entrance examination.
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-6; x? \ 16+Y? \8= 1; 8√3 ; 2√7

17 -2n\﹙n+ 1﹚

18 -2√7\7

19 0.3 0.42 2.68

20 y=x? \4-2 2

2 1 a,b= 1k∈﹙-∝,0]

22 5√2

23 x=4cosαy=4+4sinα

2√3

24 x∈﹙-∝,- 1]∪[3,+∝﹚

2