$1\:+\:4v\:-7v$
$\lim_{x\to25}\left(\sqrt{3x-6}\right)$
$\left(x+5\right)\left(x-3\right)=20$
$\frac{x^3-22x^215}{x+5}$
$-x+4x=8x-x$
$\left(2x^3+0.5y^2+2z^4\right)^2$
$10^2\:+\:xy\:-\:2y^2\:+\:17x\:-\:5y\:+\:3$
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