$1x^2+50x+25$
$\frac{1+sinx}{cosx}-\frac{cosx}{1-sinx}=0$
$3x-2-1$
$cos\:t\:=-\frac{4}{5}$
$\int y^2e^{3y}dx$
$\frac{1}{x}y'=e^{x^2+1}$
$\int\frac{1}{\left(x+1\right)\left(x^2-1\right)}dx$
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