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Mathematical puzzle: 2=3 !

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2=3

The wrong line is the one with the equal sign on the left. Though that second line (chain of =) is true, it is not equal to the system in the line above it.
 

Re: 2=3

The solu. is given in attachment
 
Re: 2=3

creative_35 said:
figure out what's wrong.
Click to expand...

it's simple

sqrt( a ^ 2 ) = |a|

so

sqrt( (2-5/2)^2 )= |-1/2| = 1/2

and
sqrt( (3-5/2)^2 )= | 1/2 | = 1/2

any question?
byez
 

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