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Help.

NotSoSmart  Nov 3, 2017
 #1
avatar+93046 
+1

16x^2  +  9  = 0

 

16x^2   =   -9         divide both sides by 16

 

x^2  =  -9/16         take both roots

 

x  =±√(-9/16)  =   ±√ [ -1 * (9/16) ]

 

x =  ± (3/4) i     ⇒  first answer

 

 

cool cool cool

CPhill  Nov 3, 2017

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