$\left(\frac{y^4}{4}\right)^2$
$\left(-\left(-20\right)-\:52\:-41\right)\cdot3$
$x^2-nx+121=0$
$2m+8m$
$4x^2-36x=0$
$0.8-\frac{7}{8}+-\frac{7}{\frac{16}{\frac{1}{4}}}$
$f^2\:+\:8f\:$
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