Panels Panels
  • 03-01-2018
  • Mathematics
contestada

Simplify.

√-112

A. 4√7
B. -4i√7
C. 4i√7
D. -4√7

√ is a square root sign btw

Respuesta :

sbcardinals
sbcardinals sbcardinals
  • 03-01-2018
C. 4i√7 is your answer because 

√-112 = 
√112*√-1 = 4√7*√-1 = 4i√7
Answer Link
ElenaClaudia
ElenaClaudia ElenaClaudia
  • 03-01-2018
√-122 = √(-1) × √122                    Obs. √-1 = i

          = i × √(16×7) = 

          = i × 4√7 = 

          = 4i√7       ⇒     Answer C.
Answer Link

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