$\frac{-2x^3+x-1}{x^2-6x+2}$
$72\cdot45$
$t.c.p\::\:x^2-4x+4$
$\frac{d}{dx}\left(\sqrt[5]{\frac{\left(4x+1\right)\left(x+2\right)^2}{\left(x^4+6\right)\left(x+8\right)}}\right)$
$\left(0.2-d\right)^4$
$16y^4+24y^2+9y=0$
$3\cdot1-3$
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