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If $x$ is a real number and $x^2 = 16$, what is the sum of all possible values of $x$?

gueesstt  Apr 9, 2018
edited by gueesstt  Apr 9, 2018
edited by gueesstt  Apr 9, 2018
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3+0 Answers

 #1
avatar+85726 
+2

x^2  =  16    take both roots

 

x  = ±√16

 

x  =  -4, 4

 

So...  the sum  = 0

 

 

cool cool cool

CPhill  Apr 9, 2018
edited by CPhill  Apr 9, 2018
 #2
avatar+1052 
+8

Good job CPhill!!

IAmJeff  Apr 9, 2018
 #3
avatar+1052 
+8

Awesomecoolcoolcool

IAmJeff  Apr 9, 2018

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