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#### wishmaster

##### Active member

- Oct 11, 2013

- 211

It was given this term:

\(\displaystyle \sqrt{1-(x^2+1)^2}\)

My friend got the solution \(\displaystyle -x^2\),but i think he is not right a about that,cause i believe you should first solve the quadratic binom,which is \(\displaystyle x^4+2x+1\),so my solution is:

\(\displaystyle \sqrt{1-x^4-2x-1}\) or \(\displaystyle \sqrt{-x^4-2x}\)

Im wondering who is right now,or how to solve this. Thank you!

\(\displaystyle \sqrt{1-(x^2+1)^2}\)

My friend got the solution \(\displaystyle -x^2\),but i think he is not right a about that,cause i believe you should first solve the quadratic binom,which is \(\displaystyle x^4+2x+1\),so my solution is:

\(\displaystyle \sqrt{1-x^4-2x-1}\) or \(\displaystyle \sqrt{-x^4-2x}\)

Im wondering who is right now,or how to solve this. Thank you!

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