$-49\:x\:25$
$-8x^2-24x=0$
$\lim_{x\to\infty}\left(\frac{4x+3x+2}{x^3+2x-6}\right)$
$\int\cos\left(x\right)\cosh\left(y\right)dx$
$x^2+55x-750=0$
$\frac{x+9}{x-4}+\frac{2x-1}{x-4}$
$2.25+1.2+0.25$
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