$\frac{x^4-4x^2+16}{x^2+4}$
$\int\left(\sqrt[3]{\left(5x^3+3\right)}x^2\right)dx$
$\int_{4x-9}^4dx$
$-10x^2-20x+670$
$120\cdot2$
$0.001+0.01$
$\frac{x+2}{-5}\:\le2x+3$
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