$\left(\frac{x^3+1}{2x^3+1}\right)^4$
$3-\left(2+11-\left(4-15-7\right)\right)-2+\left(-3-\left(5-26-1\right)+2\right)$
$10x-6-10x-2$
$2^x=4^{x+3}$
$-57-\left(-18\right)$
$-0,2\:a^2b\:+1,5\:a^2b+1,25\:a^2b$
$cos\left(x+\pi\right)-cosx=1$
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