$x-y-y'=0$
$85x^3+364x^2+509x+242$
$-8x^2+5x+7=0$
$\left(x-1\right)\ln\left(\frac{4}{9}\right)$
$\int\frac{2}{x\sqrt{x^2+25}}dx$
$\frac{x}{5}+3=7$
$-3m^2-5m+4=2$
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