$25x^2-50x^2+11x^2+14x^2$
$x^4-6x^3+3x^2+10x$
$\frac{x^3-27}{x+3}$
$\frac{\left(x^3\right)}{x+1}x^2+5x$
$2x+7\geq 4x-9$
$\frac{5x-7}{7}+\frac{6x+6}{2}>1$
$\left(-1478\right)-\left(-3698\right)\:$
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