\(gt(x)= 0,5x² -tx - 1,5t\)
\( \frac{1}{2}*x² -tx - 1,5t=0|*2\)
\( x² -2tx - 3t=0|+3t\)
\( x² -2tx = 3t\)
\( (x -t)^2 = 3t+t^2|\sqrt{~~}\)
1.)\( x -t = \sqrt{t^2+3t}\)
\( x₁ = t+ \sqrt{t^2+3t}\)
2.)\( x -t = -\sqrt{t^2+3t}\)
\( x₂ = t -\sqrt{t^2+3t}\)