$x^2-2x+1by\:x+2$
$\int_{-1}^{\infty}\left(2x+3\right)^4dx$
$x^2-5x+1<\:0$
$\frac{84}{-6}$
$\left(2x^2+1\right)+\left(4y^3-2y+1\right)y'=0$
$\lim_{x\to\infty}\left(\frac{x^3}{2\left(1+x\right)^2}\right)$
$2a^2bc-3ab^2c+5abc^2$
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