Quadratic equations

Solve for x: $x^{2}-8x+15=0$

Solve for x: $x^{2}+x-42=0$

Solve for x: $x^{2}-11x+28=0$

Solve for x: $x^{2}+5x=0$

Solve for x: $x^{2}-6x=0$

Solve for x: $x^{2}+6x=0$

Solve for x: $x^{2}+x-2=0$

Solve for x: $x^{2}-3x=0$

Solve for x: $x^{2}-12x+35=0$

Solve for x: $x^{2}-8x=0$

Solve for x: $x^{2}+7x-8=0$

Solve for x: $x^{2}+x-30=0$