$x2+xy+xy2$
$x^2+x+24$
$\cos\left(x\right)\left(\cos\left(x\right)-4\right)$
$\int\frac{1+cot^2}{csc\:x}dx$
$\frac{x+1}{x-6}>7$
$706.25\cdot8$
$\left(-3\right)\cdot7\cdot\left(-1\right)\cdot\left(-4\right)$
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