Equazione di grado superiore al secondo numerica frazionaria
[math](2x^2+1)/(x^2-1)-(x^2-3)/(x^2+1)=(2-x^2)/((x+1)(x-1))+4[/math]
[math](2x^2+1)/((x+1)(x-1))-(x^2-3)/(x^2+1)-(2-x^2)/((x+1)(x-1))-4=0[/math]
[math]((2x^2+1)(x^2+1)-(x^2-3)(x+1)(x-1)-(2-x^2)(x^2+1)-4(x+1)(x-1)(x^2+1))/((x+1)(x-1)(x^2+1))=0[/math]
[math]2x^4+2x^2+x^2+1-x^4+3x^2+x^2-3-2x^2+x^4-2+x^2-4x^4+4=0[/math]
[math]-2x^4+6x^2=0[/math]
[math]2x^4-6x^2=0[/math]
[math]2x^2(x^2-3)=0[/math]
[math]2x^2=0\\Rightarrowx=0vvx=0[/math]
[math](x^2-3)=0\\Rightarrowx=\sqrt{3}vvx=-\sqrt{3}[/math]
