$16m^2-40mn+25n^2$
$\frac{3}{2}+x\ge2$
$\left(x^2-yx\right)^2$
$35,72+17,5+183,246$
$\frac{\sin\left(2x\right)}{1-\cos^2\left(x\right)}=\frac{2}{\tan\left(x\right)}$
$\lim_{x\to\infty}\left([1+\sen\left(\frac{1}{x}\right)]^{x}\right)$
$4x+5x-9-\left(3x+x\right)+6$
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