$\ln\left(x\right)+\ln\left(x-3\right)=\ln\left(5x-7\right)$
$\lim_{x\to2}\left(3x^5-3x^4-4x^3+x^2+5\right)$
$\int_1^54xdx$
$\left(xy^4-x^3y\right)^3$
$\frac{dy}{dx}=-\frac{\left(1+y^2\right)}{xy}$
$2x-3\left(x-1\right)=-2x+12$
$\lim_{t\to0}+\left(tan2t\right)^t$
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