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= √(54 + √4x49x5) + √(12 - 2√35) + √(32 - √10x10x7)
= √(54 + 2√49x5) + √(12 - 2√35) + √(32 - 2√25x7)
= √((49+5) + 2√49x5) + √((7+5) - 2√7x5) + √((25+7) - 2√25x7)
= √49 + √5 + √7 - √5 + √25 - √7
= √74
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