$\frac{9x^3+6x^2+7}{3x^2}$
$y3\:+\:343$
$k^2+2k+1$
$-7x+15\le-5x+1$
$\left(3a^2+2b^2\right)\left(a^2-b^2\right)$
$\left(4m^3+\:5n^3\right)^2$
$\sqrt[6]{n^5}-2+1$
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