anonymous
  • anonymous
how do i go from 2x^2/sqrtx^2+1 + sqrt of x^2+1 to 4x2/sqrtX^2+1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
I think that 4is a 3, you get a common denominator and add, that's it
anonymous
  • anonymous
yeah that what i get but the the book says the answer is 4x^2+2 /sqrtx^2+1
anonymous
  • anonymous
Sometimes books are wrong. If all you doing is rewriting it that all that can be done to compact it

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anonymous
  • anonymous
yeah i know i also tried that wolfram site said the same thing
anonymous
  • anonymous
thansk for the help rou i appreciate it
anonymous
  • anonymous
thanks*
anonymous
  • anonymous
\[\frac{2x^2}{\sqrt{x^2+1}} + \sqrt{x^2+1} \] \[= \frac{2x^2}{\sqrt{x^2+1}} + \frac{x^2 + 1}{\sqrt{x^2+1}}\] \[= \frac{3x^2+1}{\sqrt{x^2+1}} \] If the book says otherwise then either you've written the problem down wrong, or the book is wrong.

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