$-\left(-3\right)+\left\{\left(-5\right)\:-\:\left[\left(+8\right)\:+\left(-10\right)\right]\right\}$
$-3\:x\:-2\:x\:-1$
$\int\frac{x}{\left(\sqrt[2]{x}-1\right)}dx$
$4x^2+x+4$
$4x^2-6x+4\ge0$
$\left(a+b\right)+\left(b+c\right)+\left(c+d\right)+\left(a-c\right)$
$7^2-\left(6+2\right)$
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