$3^{x+1}=9$
$1+cos2x+2sin^2x=2$
$2\{\left(x+y\right)^{2}\left(x-y\right)^{2}-4x^{2}$
$\lim_{x\to0}\left(\ln\left(x\right)\right)^{\frac{1}{e^x}}$
$7,024\:-\:447,202$
$\left(4x^6-10x^5-5x^4\right)\left(-2x^3\right)$
$\frac{2}{x-1}=1+\frac{x+2}{x^2+x-2}$
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