$5x+-120=450$
$x^2y+x^2=0$
$\frac{d^2}{dx^2}\left(e^{-y}\right)$
$y'=cosh\left(t\right)$
$8x+12=5x\:+3$
$\int\left(\frac{2x^3+7x^2+15x+8}{x\left(x+2\right)^3}\right)dx$
$\frac{x+3}{x-2}-2<0$
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