√3-√2
√6
√2+√7
√14
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√6 *√6/√6=√6(√3-√2)/6=√18-√12/6=3√2-2√3/6
√14 *√14/√14=√14(√2+√7)/14=2√7+7√2/14
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√3-√2
√6 *√6/√6=√6(√3-√2)/6=√18-√12/6=3√2-2√3/6
√2+√7
√14 *√14/√14=√14(√2+√7)/14=2√7+7√2/14