Factor the quadratic $y^{2} - 4 y - 32$.

Answer =

Factor the quadratic $y^{2} + 19 y + 90$.

Factor the quadratic $x^{2} - 10 x + 21$.

Solve the equation $x^{2} - 3 x + 2 =0$ by factoring.

The solutions are $x = $

If there are more than one solution, separate answers by commas

Solve the equation $z^{2} - 4 =0$ by factoring.

The solutions are $z = $