$2u^2+u=0$
$\cot\left(-u\right)$
$\int\left(2x^3+x^2-5x-8\right)dx$
$\int\sqrt[2]{1-4y}dy$
$\frac{8x^2+6x+4}{x+2}$
$1.8\cdot3.5$
$3xy+6xz+3x$
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