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= [ √(6 - 4√2) - √(6 + 4√2)/[√(3 - 2√2) + √(3 + 2√2)]² =
= [6 - 4√2 - 2√(6 - 4√2)(6 + 4√2) + 6 + 4√2]/ [√(3 - 2√2) + √(3 + 2√2)]² =
= [ 12 - 2√(36 - 32)]/[3 - 2√2 + 2√(3 - 2√2)(3 + 2√2) + 3 + 2√2] =
= (12 - 2√4)/[6 + 2√(9 - 8)] =
= (12 - 4)/(6 + 2√1) =
= 8/(6 + 2) =
= 8/8 =
= 1