Looks as if you almost got the right answer. You did get the quadratic equation correct, but the standard way to write a quadratic equation is:
x2 - 2x - 3 = 0
When factored, you get:
(x-3)(x+1) = 0
You got
(-1+ -1x)(3+ -1x) = 0
You can factor a (-1) out of the first term and drop the coefficients of 1 in front of the x, since 1*x = x:
(-1)(x+1)(-x+3) = 0
Then multiply the (-1) across the second term and you get:
(x+1)(x-3) = 0
So the solutions are:
x = 3, -1
Not sure why you want to know what 0/3 is, but 0/3 = 0*(1/3) = 0