- #1
Albert1
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x>1,y>1 and z>1
prove :$\dfrac {x^4}{(y-1)^2}+\dfrac {y^4}{(z-1)^2}+\dfrac
{z^4}{(x-1)^2}\geq 48$
prove :$\dfrac {x^4}{(y-1)^2}+\dfrac {y^4}{(z-1)^2}+\dfrac
{z^4}{(x-1)^2}\geq 48$