What is the first step in solving quadratic equations by finding square roots?

So first you have to make sure the equation is in standard form which is: ax^2 + bx + c = 0

so if you have for example:

4x-12x=9

it would look like this in standard form:

4x-12x+9=0

after you put it in standard form you submit the values of A, B and C into the formula, in this case:

A = 4, B = - 12, C=9