$6x^4+20x^4$
$\frac{x^{2}-2x-3}{x+1}$
$a\left(x-f\right)^2$
$x^3-16x^2+76x-96$
$\frac{1}{1-\sin\left(x\right)}=\sec^2\left(x\right)+\tan\left(x\right)\sec\left(x\right)$
$y=\ln\left(xe^{-3x}\right)$
$\left(a^{n-1}+b^{nm-1}\right)\left(a^{n-1}-b^{nm-1}\right)$
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