sum of roots
product of roots
discriminant
nature of roots
of

1. ×^2+4×-21=0
2. ×^2-3×-18=0
3. ×^2+×-1=0
4. ×^2+4×+4=0
5. ×^2-2×+1=0
6. 4×^2-16=20
7. n^2-64=0
8. ×^2+5×+4=0
9. ×^2+17×+49=3x
10. 35m^2+22n+3=0​