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Prove that (2^((log)2 1/4x)-3^((log)(27...

Prove that `(2^((log)_2 1/4x)-3^((log)_(27)(x^2+1)^3)-2x) /(7^(4(log)_(49)x)-x-1)>0`

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`y=(x^(4)-(x^(2)+2x+1))/(x^(2)-x-1)=x^(2)+x+1`
`therefore" "(dy)/(dx)=2x+1=ax +b`
Hence, a=2 and b=1
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