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how to solve x^2 -4= -11

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 Oct 25, 2019
 #1
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Add 4 to both sides

 

x^2 = -7

 

square root of -7 is 

 

sqrt(-7) = 2.6457513110645906i

 

dunno, all I did was just solve, remember the answer is an imaginary number

 Oct 26, 2019

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