$\lim_{x\to1}\left(\frac{\tan\left(\pi x\right)}{2}\right)^{\frac{\tan\:\left(\pi\:x\right)}{2}}$
$a^{in}\cdot a^{in}$
$16z^{2}-56z+49$
$\frac{dy}{dx}=\left(y^2+4\right)e^x$
$x^4+2x^3-3x^2-4x+4$
$m^4+2m^2+9$
$\left(9x\:+2y\right)^2$
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