$x^3-7x^2+14x-8$
$9d-6-3+8d$
$4tan\left(x\right)+1=0$
$\frac{5x-12}{4}<7$
$2sin^22x+1$
$-8x^2-x-1=0$
$\lim_{x\to\infty}\left(\frac{1-cosx}{3x^2}\right)$
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