$2x^2-14x+3.5$
$4^2-4^3$
$11-\left(-2\right)\cdot\left|4+\left(-2\right)\right|$
$8.5\left(x+3\right)+2$
$3tan^3-tanx$
$\int_0^4\frac{1}{x\left(\ln\:x\right)^2}dx$
$4\cdot1$
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