Question

Calcule :
1/1-√(2) - 1/1+√(2)

Answer 1

( 1/√2) - (1/1+√2) - (1/2+√2)= 

=(√2/2) - (1-√2)/(1-2) - (2-√2)/(4-2) 

=(√2 + 2-2√2 - 2+√2)/2 

=(√2 -2√2 +√2)/2=0
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