SOLUTION: sqrt (3) * sqrt (-30)

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Question 545990: sqrt (3) * sqrt (-30)
Answer by fcabanski(1391) About Me  (Show Source):
You can put this solution on YOUR website!
Remember that i x*y = z then sqrt%28x%2Ay%29=sqrt%28z%29
Factor -30 to remove the -1 and see if you can find perfect square factors.
sqrt%28-30%29=sqrt%283%2A10%2A-1%29=i%2Asqrt%283%29%2Asqrt%2810%29
So now it's sqrt%283%29%2Ai%2Asqrt%283%29%2Asqrt%2810%29=3isqrt%2810%29

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