$2\left(x-14\right)=3\cdot\left(x-48\right)$
$\sqrt{1}-4y$
$\int\frac{e^x}{\left(1-e^u\right)^2}du$
$3^2+4$
$\int xsec^2\left(-2x^2+1\right)dx$
$\left(3x-7\right)\left(3x-19\right)$
$2xz^2;\:x=-1;\:z=3$
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