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4 votes
Write the given expression in terms of i : √-245

a) -245 i

b) -7 i √5

c) i √-245

d) 7 i √5

1 Answer

4 votes
Okay, so first things first:
i =
√(-1)
That said, no answer that has -245 is correct.

Now we just need to solve
√(245)
245/5=5*49

√(5) * √(49) = 7i*√(5)
So, that's your answer, option D.

User AkselA
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