$3x+6x-x$
$x^2-180-144$
$\frac{a^2+2a+3}{a+3}$
$4^{-5x}=1$
$\sin\left(2x\right)=\left(\tan\left(x\right)\right)\left(1+\cos\left(2x\right)\right)$
$26a^5b^5x-13b^4x+39a^2b^7x^3$
$2p+12m+8$
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