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Question
Find the value of `sqrt(-3) xx sqrt(-6)`.
Solution
`sqrt(-3) xx sqrt(-6) = sqrt(3) xx sqrt(-1) + sqrt(6) xx sqrt(-1)`
= `sqrt(3)"i" xx sqrt(6)"i"`
= `sqrt(18)"i"^2`
= `-3sqrt(2)` ...[∵ i2 = – 1]
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