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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?

sqr=square root
^=to the power of
/=divided by
*=multiplied by

  • Algebra2/Trig -

    I get
    [(x^2+1)√(x^2-4) + x^2]/(x^2 + 1)
    which matches your answer.

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