$25x^2+90x+81$
$f\left(\frac{x+2}{3}\right)=3x-2$
$8+12\left(3-9\right)$
$x^2-7x+2$
$\cos\left(\csc\left(x\right)+\tan\left(x\right)\right)$
$x^2\ge1$
$\frac{\left(x+1\right)}{\left(x^2+1\right)}>\frac{\left(x-1\right)}{x^2+1}$
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