+0  
 
0
50
6
avatar+2291 

\(\sqrt{128r^3}\)

Simplify

RainbowPanda  Nov 12, 2018
 #1
avatar+92787 
+3

√ [ 128 r^3 ]  =

 

√64 *  √2 *    √ r^2   *   √ r   =

 

8 * √2 * r   * √ r  =

 

8r √ [ 2r ]

 

 

cool cool cool

CPhill  Nov 12, 2018
 #4
avatar+316 
+3

2 fast :p

Dimitristhym  Nov 12, 2018
 #5
avatar+2291 
+2

Thank you CPhill and thanks to dimitristhym as well!

RainbowPanda  Nov 12, 2018
 #6
avatar+92787 
+1

LOL!!!!!

 

 

cool cool cool

CPhill  Nov 12, 2018
 #2
avatar
+1

8r sqrt 2r. 

Welcome.

 

Hope this helps a little bit, sorry I don't have too much time for explanation. (and I don't understand why latex does not work here)

Guest Nov 12, 2018
edited by Guest  Nov 12, 2018
 #3
avatar+316 
+3

\(\sqrt{128r^3}=\sqrt{64 \times 2 \times r^2 \times r }=\sqrt{64} \sqrt{r^2} \sqrt{2r}=8r\sqrt{2r}\)

 

Hope this helps!

Dimitristhym  Nov 12, 2018

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