Find the rationalising factor of √2+√3+√7
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Rationalising factor is a term with which a term is multiplied or divided to make the whole term rational. (√2 + √7 - √10)(√2 + √7 + √10) = (√2 + √7)^2 - 10 = 2√14 - 1. = 55.
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Answer. 7+2√3 is the rationalising factor.
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