$0=81-x^2$
$a^4+36a^4-16a^2b^2$
$2\sqrt{48}$
$\:-12\:.\:3\:+\:18\::\:\left(\:-12\::\:6\:+\:8\:\right)$
$1+\cos\left(4a\right)=2\left(\cos\left(3a\right)\cdot\cos\left(a\right)+\sin\left(3a\right)\cdot\sin\left(a\right)\right)^2$
$4^{2\left(2c+3\right)}$
$\int a^{5nx}dx$
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