Question 223006
How evaluate the expression sqrt -9 / sqrt (-4)* sqrt (-7)
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= {{{3i/((2i)*isqrt(7))}}}
= {{{3/((2i)*sqrt(7))}}}
= {{{3*sqrt(7)/(14i)}}}
= {{{-3i*sqrt(7)/14}}}
Since any of the roots can be negative, also
= {{{+3i*sqrt(7)/14}}}