$2x+1\ge5$
$144-m^4n^{30}$
$\left(2i\right)\left(1-i\right)$
$\left(4-5x^2\right)\left(3-2x+6x^2\right)$
$\int\left(\frac{6}{x^2-14x}\right)dx$
$x^2-8x+15<0$
$\left(6-\left(30-12\right)\cdot\left(-3\right)\right)\cdot\left(4\right)$
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