Return
![x*[x^2-4]+5=y*[y^2-1]](formula1.png)
![x*[x^2-4]+4=y*[y^2-1]](formula2.png)
![x*[x^2-4]+3=y*[y^2-1]](formula3.png)
![x*[x^2-4]+2=y*[y^2-1]](formula4.png)
![x*[x^2-4]+1=y*[y^2-1]](formula5.png)
![x*[x^2-4]+0=y*[y^2-1]](formula6.png)
![x*[x^2-4]-1=y*[y^2-1]](formula7.png)
![x*[x^2-4]-2=y*[y^2-1]](formula8.png)
![x*[x^2-4]-3=y*[y^2-1]](formula9.png)
![x*[x^2-4]-4=y*[y^2-1]](formula10.png)
![x*[x^2-4]-5=y*[y^2-1]](formula11.png)
