Quadratics: Completing the Square

Solve the following quadratic equations by completing the square:

1. $x^2+6x=0$
2. $x^2-8x=0$
3. $x^2-20x=0$
4. $x^2+30x=0$
5. $x^2-2x=0$
6. $x^2+2x-24=0$
7. $x^2+12x+11=0$
8. $x^2+3x=0$
9. $x^2-4x=5$
10. $x^2-14x=51$