1. Solve: x² - 3x - 4 = 0

2. If α+β=5, αβ=6

3. Nature of roots of x²+1=0

4. (a+b)² = ?

5. Solve: 2x=10

6. Sum of angles triangle:

7. Angle in semicircle:

8. Distance (0,0) to (6,8)

9. sin30°

10. cos60°

11. tan45°

12. Area of circle

13. Volume cube

14. Probability head

15. Mean of 1,2,3

26. Synonym brave

27. Antonym increase

28. Capital India

29. Largest planet

30. Black soil