$\left(\frac{y^3}{5}+\frac{4x^2}{7}\right)^2$
$r^2+r+r$
$5\cdot8\cdot6$
$3^1\cdot3^6$
$\left(x+5\right)^2+\left(x-4\right)^2-2x\left(x+1\right)^2$
$-t^2+4t-3$
$6\cdot10-24$
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