$-320y+40y+-20y$
$5x\:+\:4\:+\:4x\:+\:2\:-\:5\:-\:3x$
$\lim_{x\to\infty}\left(\frac{sin\left(x\right)}{x}\right)^{\frac{20}{x^2}}$
$\frac{\sqrt{4-x^2\cdot\:\left(16-8x^2+x^4\right)}}{30}$
$\left(-2+x\right)\left(a^2+b\right)$
$20+90+bc$
$8+9\cdot3$
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