$\left(6m-4\right)^2$
$5^{2x}+12=8\left(5^x\right)$
$x\frac{dy}{dx}+2y=x$
$3-6u-2+4u$
$\frac{d}{dx}x^3+e^xy=y^2$
$\frac{1}{1+\cos\left(x\right)}+\frac{\cos\left(x\right)}{1-\cos\left(x\right)}$
$\lim_{x\to2}\left(\frac{5\sin\left(x-2\right)}{x^2+2x}\right)$
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