For what values of the variable x does the following inequality hold:
2
$\begingroup$
$\ \frac{4x^2}{\Bigl(1-\sqrt{\ 1\ +2x}\Bigr)^2} < 2x+9$
... IMO-1960
elementary-number-theory
inequality
contest-math
asked
2012-10-23
user id:41606
11
1
1bronze badges
0
a nice and simple inequality (+1)
–
2012-10-23
1
I've added [tag:contest-math] tag, since you wrote that it is from IMO. I don't think that [tag:elementary-number-theory] tag is a good fit for this question.
–
2012-10-23
2 Answers
2
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