SOLUTION: express in terms of i and simplify. -√-28 -2√-63 help please. thank you.

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Question 459392: express in terms of i and simplify.
-√-28 -2√-63
help please. thank you.
Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!
-√-28 -2√-63
= - 2√7 i - 6√7 i
= -8√7i