$\left(1+x^3\right)^{\frac{-2}{5}}$
$5^2^x-2\left(5^{x+1}\right)+21=0$
$0,148\cdot4,5$
$3.77\cdot1.625$
$2\sin^22x=1$
$1.5+x\:=\:0$
$\frac{\left(3x^{-2}y\right)^{-1}}{\left(2xy^{-2}\right)^0}$
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