$r^2-r-1=0$
$2\cos\left(x\right)^2-3\sin\left(x\right)$
$\lim_{x\to\infty}\left(\frac{6x^3}{\sin\left(x\right)-x}\right)$
$4cm^2y+32c+12fm^2y+96f$
$-4+x=24$
$\frac{\left(x^3-19x+30\right)}{\left(x-2\right)}$
$\left(-6\right)-\left(-4\right)$
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