+0  
 
0
1044
3
avatar+141 

Hi Melody here is the problem: 5 ³√625 + ³√135

 Jul 17, 2014

Best Answer 

 #3
avatar+33661 
+5

625 = 53*5 so its cube root is 5√5

135 = 33*5 so its cube root is 3√5

Therefore  5 ³√625 + ³√135 = 5*5√5 + 3√5 = 25√5 + 3√5 = 28√5

 Jul 18, 2014
 #1
avatar+8262 
0

RoMeMaJo8, why won't you write a question for me?

 Jul 17, 2014
 #2
avatar+8262 
0

the 3 after the plus sign does not work on the calculator. 

 Jul 17, 2014
 #3
avatar+33661 
+5
Best Answer

625 = 53*5 so its cube root is 5√5

135 = 33*5 so its cube root is 3√5

Therefore  5 ³√625 + ³√135 = 5*5√5 + 3√5 = 25√5 + 3√5 = 28√5

Alan Jul 18, 2014

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