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38 votes
38 votes
Which choice is equivalent to the expression below?

√-81

A. √9i

B. i√9

C. 9i

D. -9

E. -√9

Which choice is equivalent to the expression below? √-81 A. √9i B. i√9 C. 9i D. -9 E-example-1
User Sparky
by
2.6k points

1 Answer

19 votes
19 votes

Answer:

Explanation:

Remark

√-81 breaks down to two roots

  • √81 = 9
  • √-1 = i

Solution

√-81 = i9

Answer

C

User Dave Bacher
by
3.0k points