$\cos2x+1=0$
$p^2-12pq-36^2$
$\left(a^{x+1}+b^{x+2}\right)^2$
$\left(2sinx+1\right)\left(cosx-1\right)+0$
$\left(x+2y\right)dy-ydx$
$\sqrt[25]{32m^{15}n^{20}b^{10}}$
$\left(-7\right)\left(8\right)\left(-9\right)\left(-3\right)$
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