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

Tom Lord asked Oct 15, 2022

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13 votes

Hey I need help with this problem pls.

Which expression is equal to 2√-28?

−4√7

−4i√7

4i√7

4√7i

Tom Lord asked Oct 15, 2022

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13 votes

Explanation:

=2√-28

=2√4×7×-1

=2(2)√7×-1

=4i√7 (i=√-1)

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