要有解题过程,X 2是X的平方
1. 4X 2-4X 〉15
2. 13-4X 2 〉0
3. X 2-3X-10 〉0
4. X(9-X)〉0
5. 4X 2-20X〈 25
6. (X-3)(X-7)〈 0
7. -3X 2+5X-4 〉0
8. X(1-X)〉X(2X-3)+1
要有解题过程,X 2是X的平方
1. 4X 2-4X 〉15
2. 13-4X 2 〉0
3. X 2-3X-10 〉0
4. X(9-X)〉0
5. 4X 2-20X〈 25
6. (X-3)(X-7)〈 0
7. -3X 2+5X-4 〉0
8. X(1-X)〉X(2X-3)+1