Question 697070
I'm not sure if I am solving this question on systems of equations right. the answer needs to be in simplest a+bi form:

{{{y=2x^2-6x+7}}}
y=x-4

my work:

{{{x-4=2x^2-6x+7}}}
{{{0=2x^2-7x+11}}}

then I did the quadratic equation: negative B plus or minus {{{sqrt(b^2-4ac)}}} divided by 2a

a=2
b=-7
c=11
4ac=22  *************  4ac = 88
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You did it right, except for that.
Go from there.
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*[invoke solve_quadratic_equation 2,-7,11]