$\left(y+20\right)^2$
$\int\left(\frac{3x}{x^2+x}\right)dx$
$1-cos^2x\:tan^2x$
$\lim_{x\to\infty}\left(\frac{x^3+\:x}{e^{2x}}\right)$
$\int\frac{\left(2x-1\right)}{x^2+5x-6}dx$
$-m+2m$
$x-1.5^2$
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