[tex] \frac{2x^2-7x}{2} \geq (x-1)^2[/tex]
[tex]2x^2-7x \geq 2(x-1)^2[/tex]
[tex]2x^2-7x-2(x-1)^2 \geq 0[/tex]
[tex]2x^2-7x-2(x^2-2x+1) \geq [/tex]
[tex]2x^2-7x-2x^2+4x-2 \geq 0[/tex]
[tex]-3x-2 \geq 0[/tex]
[tex]-3x \geq 2[/tex]
[tex]x \leq -\frac{2}{3} [/tex]
x∈[-infinit,-2/3]
