$\left(\frac{1}{2}+\frac{1}{2}cos2x\right)^3$
$13x+39y$
$\lim_{x\to\infty}\left(\frac{10\left(5+3x\right)}{1+0.04x}\right)$
$20\left(-1\right)$
$\left(x+1\right)\left(x-1\right)>\left(x-2\right)^{\left(2\right)}-3$
$\sqrt[64]{-41^8}$
$9x^2-7y^3\:.\:9x^2+7y^3$
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