$2^{8^{x-2}}=4^{4^{x-1}}$
$cos\:2x\:-\:3\:sen\:x\:+\:1\:=\:0$
$4k^2+16k+25$
$\frac{x^4}{x^3}$
$\left(3a^2+4c^4\right)^2$
$\frac{3\left(-5\right)-11}{3\left(-5\right)+5}<7$
$\frac{dy}{dx}=\cos\left(5\right)x$
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