$2u^4-x^2-1=0$
$\int_0^{\pi}cos^2xsen^4xdx$
$\frac{m^{12}-n^{12}}{m^3-n^3}$
$x^2+\left(3a-2b\right)x-6ab$
$\left(3ab\right)\left(5ab\right)$
$-\left(2x-3\right)-3-2x$
$\left(x+3i\right)\left(x-3i\right)$
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