$\left(x^2+y\right)\left(x^2+\frac{1}{y}\right)$
$7-3mk+4km+4$
$\int usin\left(u\right)du$
$\left(4v-1\right)^3$
$\sqrt{1-\cos\left(t\right)^2}$
$\frac{-4x}{9x^2-9}$
$4x+40=3x-40$
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