$\frac{1}{x^2\sqrt{2-3x^2}}$
$\int\frac{tanx+1}{tan^2x-1}.dx$
$16\left(2w+4\right)$
$20x^2-7x-3=0$
$b^4+625b^2+168^2$
$\frac{-3^2\cdot3^2}{-3^{-6}}$
$6x^2-8x-8\:\cdot2x\:-4$
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