$x^4+16^2+64$
$4x^2-20x$
$a+9=\frac{18}{a}+2$
$\ln\left(3y+2\right)-\ln\left(4\right)=x+3\ln\left(x\right)$
$\frac{2x^4-2x^3+6x^2-5x+1}{x^3-x^2+x-1}$
$2b+5\left(b+2\right)$
$18z^3+200z-120$
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