$\lim_{x\to0}\ln\left(\frac{x+e^{2x}}{a+e^{4x}}\right)$
$\left(x^7+0x^6-20x^5-2x^4+64x^3+40x^2+0x-128\right)$
$2cos^2x\left(1-cos2x\right)=sin^22x$
$x^2-18x+66$
$789,960+3\:576,098$
$3\sqrt{2}+2\sqrt{2}$
$\frac{3}{4}x+\frac{1}{3}>\frac{2}{3}x+\frac{1}{2}$
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