$-12=2+5v+2v$
$\int\frac{3}{5e^x}dx$
$\int t\cdot e^{4t}dt$
$z^8+z^4-272$
$4\left(x-5\right)+27\le4x-9$
$1^2+2^2+3^2$
$1+\left(42\right)-\left(-5\right)$
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