$8p-2-4+4p$
$\frac{1}{csc\left(x\right)-1}+\frac{1}{csc\left(x\right)+4}$
$4-2\sin\left(x\right)=3$
$3xy+6y+8y+3z$
$\frac{x^4-1}{x^3-x^2+3x-3}$
$\left(\frac{4x^5y^{-5}}{5y^{-6}}\right)^2$
$x+20=50$
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