$\lim_{x\to\infty}\left(\frac{cos\left(-x\pi\right)}{\sqrt[3]{x}}\right)$
$3\sqrt{2.77777777777777777777777777777}$
$\cos\left(-180-x\right)$
$-4y-2y^2$
$2-i+x=3+6i$
$\frac{\sqrt{x-6}\sqrt{x+6}}{x^{2}-36^{2}}$
$v^2-4v-60$
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