- #1

liluiass

- 3

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## Homework Statement

X and Y 2 real numbers / |x| <1 and |y|<1

Prove that |x+y|<|xy+1|

## Homework Equations

## The Attempt at a Solution

|x+y|<2

I couldn't prove that |xy+1| >2

And couldn't find a way to solve the problem

Please help