Discriminant

Using the discriminant, find out if the following equations have 1, 2, or no real solutions.  

1. $x^2-7x+9=0$
2. $2x^2+4x-10=0$
3. $4x^2-x=-20$
4. $x^2=4x-8$
5. $x^2+6=-3x$
6. $2x^2-6x+6=0$
7. $-6x+2=2x^2$
8. $5x^2-2x+1=0$
9. $6x^2+6x+6=0$
10. $3x^2-12x=-12$