$9v+3v-9v$
$2y^2+6y=\:-3$
$\int12\cos\left(x^2\right)dx$
$\lim_{x\to\infty}\left(\frac{\left(2+x\right)^3-8}{x}\right)$
$\log_{2x}\left(x-10\right)+\log_{2x}\left(2\right)=\log_{2x}\left(x-2\right)$
$\left(\frac{x-1}{x}\right)^4$
$\left(-5x^2\right)\cdot\left(4x^4\right)+2x^3\cdot\left(-5x\right)\cdot\left(x^3\right)$
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