write the following by rationalisation of denominator 1 upon 2 square root 5 minus square root 6
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(1 upon 2√5-√6)×(2√5+√6)
2√5+√6 upon 2√5 ka square -√6 ka square
2√5+√6 upon 20-6
2√5+√6 upon 14
2√5+√6 upon 2√5 ka square -√6 ka square
2√5+√6 upon 20-6
2√5+√6 upon 14
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