$\int\frac{x^2}{\sqrt{2-x^3}}dx$
$p=\sqrt{1+cos40}-\sqrt{1-cos40}$
$2^2.2^3.2^5$
$\frac{\left(4^{m\cdot4^5}\right)}{4^n}$
$\frac{c^6}{121}-d^{12}$
$\left(\frac{1}{4y^2}\:-\frac{1}{2}\right)\left(\frac{1}{4y^2\:}\:+\frac{1}{2}\right)$
$x^2+6x^2+9^2$
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