rationalise the dinometer.✓2/✓3+✓7
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√2/√3+√7 = √2/√3+√7 × √3-√7/√3-√7 = √2(√3-√7)/(√3+√7)×(√3-√7) = √6-√14/3-7 = √6-√14/-4 = - √6-√14/4
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