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A number to the 8th power divided by the same number to the 5th power equals 343. What is the number?

 Jan 4, 2017

Best Answer 

 #2
avatar+259 
+5

x^8/x^5 = 343

 

x^(8-5) = 343

 

x^3= 343

 

{x=(((7*sqrt(3))*i-7)/2), x=-((((7*sqrt(3))*i+7)/2)), x=7} 

 Jan 4, 2017
 #1
avatar+37091 
+5

x = number

 

x^8/x^5 = 343

x^(8-5) = 343

x^3 = 343

x=7

 Jan 4, 2017
 #2
avatar+259 
+5
Best Answer

x^8/x^5 = 343

 

x^(8-5) = 343

 

x^3= 343

 

{x=(((7*sqrt(3))*i-7)/2), x=-((((7*sqrt(3))*i+7)/2)), x=7} 

amnesia Jan 4, 2017
 #3
avatar+259 
+5

Someone was faster lul

amnesia  Jan 4, 2017

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