$\left(\:x\:+\:2\right)\:\left(x\:-\:2\right)\:+\:\left(x\:-1\right)\:\left(\:x\:+\:1\right)$
$\frac{\sqrt{a^2+3b^2}}{5a-3b}\:+\:\frac{a}{b}$
$\int\frac{3x+1}{\left(x-2\right)\cdot\left(x+3\right)}$
$3.96\cdot92$
$\left(-100\right)^9$
$\frac{x^2-6x+8}{x-4}$
$\left(\frac{x^{p+q}}{x^{p-q}}\right)^{p+q}.\left(\frac{x^{p-q}}{x^{p+q}}\right)^{p-q}$
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