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Hey I need help with this problem pls. Which expression is equal to 2√-28? −4√7 −4i√7 4i√7 4√7i
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4 votes
Hey I need help with this problem pls.

Which expression is equal to 2√-28?



−4√7

−4i√7

4i√7

4√7i

User Eric Chen
by
4.0k points

1 Answer

4 votes

Explanation:

=2√-28

=2√4×7×-1

=2(2)√7×-1

=4i√7 (i=√-1)

Note:if you need to ask any question please let me know.

User Hank X
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