-x2+6x+7 |
-x2+6x+7 |
A.∅ | B.[-1,4] | C.[-1,7] | D.[0,4] |
-x2+6x+7 |
-x2+6x+7 |
-x2+6x+7 |
-(x-3)2+16 |
A.{x|-2<x<2} | B.{x|-2≤x≤0} | C.{x|1≤x<2} | D.{x|0<x<1} |
A.{5} | B.{1,3,4,5,6,7,8} |
C.{2,8} | D.{1,3,7} |
1 |
2 |
A.∅ | B.(-∞,0) | C.(0,
| D.(-∞,
|
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