+0  
 
+5
141
4
avatar+234 

[(root2)+(root1/2)]^2 apparently = 4.5???

the square cancels out with the roots so

it should be (2+1/2) = 3/2

weeeeird

im some helps me ill give 5 stars

HelpMeWithThisPlease  Feb 16, 2017
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4+0 Answers

 #1
avatar+10614 
+5

Nothing cancels out

 

(sqrt2 + sqrt1/2)^2 =

2 + 2 sqrt2 sqrt1/2 + 1/2

2.5 + 2(sqrt(2 x 1/2)

2.5 + 2 sqrt 1

2.5 + 2 = 4.5

ElectricPavlov  Feb 16, 2017
 #2
avatar+90617 
0

5 stars .. how can I say not to that :))

 

\([(\sqrt2)+\sqrt{1/2}]^2\\ =\left[\sqrt2+\frac{1}{\sqrt{2}}\right]^2\\ =\left[\sqrt2+\frac{1}{\sqrt{2}}\right]\left[\sqrt2+\frac{1}{\sqrt{2}}\right]\\ =(\sqrt2)^2\;\;+\;\;2*\sqrt2*\frac{1}{\sqrt{2}}\;\;+\;\;(\frac{1}{\sqrt2})^2\\ =2\;\;+\;\;2\;\;+\;\;\frac{1}{2}\\ =4\frac{1}{2} \)

 

I would have done it for free  wink

Melody  Feb 16, 2017
 #3
avatar+77081 
0

Looks like you did anyway, Melody.......LOL!!!!

 

 

cool cool cool

CPhill  Feb 16, 2017
 #4
avatar+90617 
0

Yah, maybe :))

Melody  Feb 16, 2017

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