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Simplify. √-112 A. 4√7 B. -4i√7 C. 4i√7 D. -4√7 √ is a square root sign btw

Simplify. √-112 A. 4√7 B. -4i√7 C. 4i√7 D. -4√7 √ is a square root sign btw
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4 votes
Simplify.

√-112

A. 4√7
B. -4i√7
C. 4i√7
D. -4√7

√ is a square root sign btw

User Michael Malov
by
9.8k points

2 Answers

5 votes
√-122 = √(-1) × √122 Obs. √-1 = i

= i × √(16×7) =

= i × 4√7 =

= 4i√7 ⇒ Answer C.
User Ranu
by
7.8k points
5 votes
C. 4i√7 is your answer because

√-112 = √112*√-1 = 4√7*√-1 = 4i√7
User Tehnolog
by
7.3k points
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