Question 1

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Resol, extraient potències de 10 de dins de les arrels com a l’exemple:

 

square root of 250.000 end root space equals thin space square root of 25 times 10.000 end root space equals space square root of 25 times 10 to the power of 4 end root space equals
equals space 10 squared times square root of 25 space equals thin space 10 squared times 5 space equals thin space 500 

Per cada 2 zeros traiem un 10.

 

square root of 490.000 end root space equals thin space...

 

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