Which factor should be multiplied to both numerator and denominator to rationalize…

MATHEMATICS · Single correct · CBSE · Mathematics · Real Numbers · Real Numbers

Problem

Which factor should be multiplied to both numerator and denominator to rationalize the denominator of 15−2\dfrac{1}{\sqrt{5}-2}? (a) 5\sqrt{5} (b) (5−2)2(\sqrt{5}-2)^{2} (c) 5+2\sqrt{5}+2 (d) 5−2\sqrt{5}-2

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