Can anyone help me with this question? Thank you!

Quadratic is 0=ax²+bx+c

one way is completing the square
that is, get it into a form like k=a(x-h)²

2nd way is factoring
like into form 0=(ax-b)(cx-d)

3rd way is quadratic equation
for 0=ax²+bx+c,

2 solutions max because it is 2nd degree

solutions can be called zeroes because that is where y=0
they can also be called roots