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Mathematics
Drew Williamson
10 October, 18:20
What is the sum of sqrt - 2 and sqrt - 18
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Victoria Patrick
10 October, 18:44
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4i sqrt (2)
Step-by-step explanation:
sqrt (-2) + sqrt (-18)
We know sqrt (ab) = sqrt (a) sqrt (b)
sqrt (-1) sqrt (2) + sqrt (9) sqrt (-2)
sqrt (-1) sqrt (2) + sqrt (9) sqrt (2) sqrt (1)
We know the sqrt (-1) is equal to i
i sqrt (2) + 3 sqrt (2) i
i sqrt (2) + 3i sqrt (2)
4i sqrt (2)
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