$2a^7-2a^6-64a^5+4a^3$
$2+2+5+1$
$6n-20=3n+7$
$7x+5=-100$
$x^2+10x+26$
$\sqrt[x]{32=2}$
$\frac{1}{2}a+\frac{1}{3}a$
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