$100y^2\:-\:20y\:-\:1$
$\int\frac{z^2}{\left(z-1\right)^2}dz$
$\frac{dy}{dx}+2cot\left(2x\right)y=x$
$\lim_{x\to1}\left(\frac{x^2+4x-3}{x^2-1}\right)$
$-x+4-5x+2$
$49z^4+0z^3-70z^2+0z+25$
$\frac{dy}{dx}=\frac{e^{3x}-3}{e^{3x+4y}}$
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