$\left(2p+3q+r^2\right)^2$
$\left(5a^2-3b^3\right)^2$
$\frac{x^2+6x+12}{x+2}<\:1$
$\left(-9\right)-\left(-25\right)$
$t^4+3t^2-2$
$\frac{2^2}{2^{-3}}$
$\int\frac{sin\left(2x\right)}{5+4cos\left(2x\right)}dx$
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