Question

extrae las sigientes raices
√-16
√144
√81
√4/225

Answer 1

$\sqrt{-16} = \sqrt{(4)^{2} (-1)} = \sqrt{4^{2} }}( \sqrt{-1}) = ±4i$

$\sqrt{144} = \sqrt{12^{2} } = ± 12$

$\sqrt{81} = \sqrt{81^{2} } = ±9$

$\sqrt{ \frac{4}{225} }= \sqrt{\frac{2^{2} }{ 15^{2} } } = ±\frac{2}{5}$