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2009-11-21T18:35:57+01:00
A=√(6-4√(2 )) +√(3-2√2)
=√(2(3-2√2))+√(3-2√2)
=√2(√(3-2√2))+√(3-2√2)
=√(3-2√2))(√2+1)
=√((√2+1)²*(3-2√2))
=√((2+2√2+1)*(3-2√2))
=√((3+2√2)*(3-2√2))
=√(9-4*2)
=√(9-8)
=√1
=1
1 należy do N