Factoring out a Constant

In the following quadratic equations, factor out a constant, if possible:  

1. $8x^2+4x-10=0$
2. $2x^2-6x+9=0$
3. $4x^2-4x=-20$
4. $8x^2=4x-8$
5. $3x^2+6=-36x$
6. $2x^2-6x+6=0$
7. $-6x+18=12x^2$
8. $5x^2-2x+10=0$
9. $6x^2+6x+6=0$
10. $3x^2-12x=-12$