$\int\frac{y}{2\left(190-x\right)}dx$
$c^6-d^3$
$\lim_{x\to0}\left(\frac{\arctan\left(x^2\right)}{2x^2-1}\right)$
$\left(x_{2}\uosz-1\right)-x_{1}u\alpha$
$\frac{14}{15}x-\frac{7}{6}x$
$\cot^4a+\cot^2a=\csc^4a+\csc^2a$
$\int\:\sqrt{x}\left(3x+1\right)dx$
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