Question 695812
You're not that far from the solution:
{{{x^2+((-3/2)x+3)^2+2x+4((-3/2)x+3)-8=0}}}
{{{x^2+((9/4)x^2-9x+9)+2x+(-6x+12)-8=0}}}
{{{x^2+(9/4)x^2-9x+9+2x-6x+12-8=0}}}
{{{(1+(9/4))x^2+(-9+2-6)x+9+12-8=0}}}
{{{(13/4)x^2+(-13)x+13=0}}}
{{{(13/4)x^2-13x+13=0}}}
{{{(1/4)x^2-x+1=0}}}
{{{x^2-4x+4=0}}}
{{{(x-2)^2=0}}}
{{{highlight(x=2)}}}
{{{y=(-3/2)(2)+3}}}
{{{y=-3+3}}}
{{{highlight(y=0)}}}