(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Prove: xyzw[tex]\geq x+y+z+w-3[/tex],where [tex]x\geq 1,y\geq 1,z\geq 1,w\geq 1[/tex]

2. Relevant equations

3. The attempt at a solution

The only thing i could try is to square both sides but then this leads nowhere.

Any ideas??

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# Homework Help: Square both sides inequality help

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