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प्रश्न
Select the correct answer from the given alternatives:
`sqrt(-3) sqrt(-6)` is equal to
विकल्प
`-3sqrt(2)`
`3sqrt(2)`
`3sqrt(2)"i"`
`-3sqrt(2)"i"`
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उत्तर
`-3sqrt(2)`
Explanation;
`sqrt(-3) sqrt(-6) = (sqrt(3)"i") (sqrt(6)"i")`
= `3sqrt(2) (-1)`
`-3sqrt(2)`.
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