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f(x)=5x2=203 

 May 13, 2022
 #1
avatar+57 
0

x^2=1600

x=40

 

Atlas 

 May 13, 2022
 #2
avatar+13731 
+1

\(5x^2=20^3\\x^2=1600\\ x=\pm \sqrt{1600}\\ \color{blue}x\in\{-40;40\}\)

.
 May 13, 2022

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