Question 184453
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What you said was:


*[tex \Large \ \ \ \ \ \ \ \ \ \ \ \  3 sqrt{- 4} = 2]


Which is an utterly false statement because a complex number with a non-zero imaginary component cannot be equal to a real number.


What you really might have meant was:


*[tex \Large \ \ \ \ \ \ \ \ \ \ \ \  3sqrt{x - 4} = 2]


In which case:


Divide both sides by 3:


*[tex \Large \ \ \ \ \ \ \ \ \ \ \ \  sqrt{x - 4} = {2 \over 3}]


Square both sides:


*[tex \Large \ \ \ \ \ \ \ \ \ \ \ \  x - 4 = {4 \over 9}]


Add 4 to both sides:


*[tex \Large \ \ \ \ \ \ \ \ \ \ \ \  x = {4 \over 9} + 4]


*[tex \Large \ \ \ \ \ \ \ \ \ \ \ \  x = {4 \over 9} + {36 \over 9} = {40 \over 9}]


John
*[tex \Large e^{i \pi} + 1 = 0]
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