x+(x^(2^( ))-5)/(x^(2)-1)=(x^(2)+x+2)/(x+1)

What power is 2 raised to on the left side?

 

this is my interpretation, the only missing part is what power 2 is raised to.  

\(x+(x^{2^{missing}}-5)/(x^2-1)=(x^2+x+2)/(x+1)\)