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Simplify the expression 1/sqrt(2) + 3/sqrt(8) + 5/sqrt(32).

 Jan 31, 2022
 #1
avatar+1223 
+3

12+38+532

=2212+322+542

=22+22322+22542

=22+324+528

=42+62+528

=1528

.
 Jan 31, 2022
 #2
avatar+364 
+3

12+38+532

12+322+542

442+642+542

1542

hmm........ we got different answers

 Jan 31, 2022
 #3
avatar+1223 
+2

These answers are equivalent, as shown below:

 

154222=1528

 

This process is called rationalizing the denominator.

CubeyThePenguin  Jan 31, 2022
 #4
avatar+364 
+4

totally forgot alll about that lol

thanks you for reminding me!

 Feb 2, 2022

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