$$[1+2^{3})^{\frac{1}{2}}+(140-19)^{\frac{1}{2}}+3]^{\overline{3}}$$
$17$
$$\left(1+8\right)^{\frac{1}{2}}+\left(140-19\right)^{\frac{1}{2}}+3$$
$$9^{\frac{1}{2}}+\left(140-19\right)^{\frac{1}{2}}+3$$
$$3+\left(140-19\right)^{\frac{1}{2}}+3$$
$$3+121^{\frac{1}{2}}+3$$
$$3+11+3$$
$$14+3$$
$$17$$
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