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anonymous
 5 years ago
how do i go from 2x^2/sqrtx^2+1 + sqrt of x^2+1 to 4x2/sqrtX^2+1
anonymous
 5 years ago
how do i go from 2x^2/sqrtx^2+1 + sqrt of x^2+1 to 4x2/sqrtX^2+1

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I think that 4is a 3, you get a common denominator and add, that's it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeah that what i get but the the book says the answer is 4x^2+2 /sqrtx^2+1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Sometimes books are wrong. If all you doing is rewriting it that all that can be done to compact it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeah i know i also tried that wolfram site said the same thing

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0thansk for the help rou i appreciate it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[\frac{2x^2}{\sqrt{x^2+1}} + \sqrt{x^2+1} \] \[= \frac{2x^2}{\sqrt{x^2+1}} + \frac{x^2 + 1}{\sqrt{x^2+1}}\] \[= \frac{3x^2+1}{\sqrt{x^2+1}} \] If the book says otherwise then either you've written the problem down wrong, or the book is wrong.
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