$\frac{4a^2+2a+1}{2a^2+1}$
$\frac{1+243x^5}{3x+1}$
$\left(\frac{2}{3}z+3\right)^3$
$x+5=-3x+25$
$\frac{-0.78\pi}{180}$
$\int100e^{-0.01}dx$
$y5+32$
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