$$4+ \sqrt{ 4-(41+6-4 \times 4) }$$
$4+3\sqrt{3}i\approx 4+5.196152423i$
$$4+\sqrt{4-\left(47-4\times 4\right)}$$
$$4+\sqrt{4-\left(47-16\right)}$$
$$4+\sqrt{4-31}$$
$$4+\sqrt{-27}$$
$$4+3i\sqrt{3}$$
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$4$
$\text{Indeterminate}$
