That equation doesn't work because you're saying 3-3 and that does not equal 6
the answer for this question is:
1/17
Discriminant is the value b^2 -4*a*c once the quadratic is in standard form
x^2 + 11x + 121 = x + 96
subtract x from both sides
x^2 + 10x + 121 = 96
subtract 96 from both sides
x^2 + 10x + 25 = 0
10^2 - 4 * 1 * 25
100 - 100 = 0
Discriminant is 0
You can use the cancellation method to solve.
x + y = 3
2x - y = 6
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3x + 0 = 9
3x = 9
3x / 3 = 9 / 3
x = 3
So x =3