$x+\frac{3x}{x+2}+2$
$x+11xy+28y^2^2^2^2^2$
$g\left(x\right)=\left(x^2+1\right)\left(x-1\right)^7x^3$
$\frac{4x^3-2x^2+1}{4x^3-x}$
$d^4-2d^2g^3+g^6$
$m-8m+2m-6$
$sin\left(\frac{2\pi}{3}-\frac{3\pi}{4}\right)=sinucosv-cosusinv$
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