1.

What is the value of √-a ×√-b in complex no

Answer»

√-a×√-b

=√-1×√a×√-1×√b

= i × √a × i × √b        (because √-1=i)

= i² × √ab

=-1√ab.        (because i² = -1)

=-√ab

Answer is √-ab




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