posted by Vincent .
I got ((x^2+1)*sqr(x^2-4)+x^2)/x^2+1
But my teacher gave (sqr(x^2-4)+x^2)/x^2+1
I did the problem over again but I can't figure out why my teacher got the answer. Can someone confirm that my teacher is right or am I right?
^=to the power of
[(x^2+1)√(x^2-4) + x^2]/(x^2 + 1)
which matches your answer.