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CBSE Class 9 Answered

a=9-4√5 find √a-1/√a
Asked by raghavgargrg28 | 10 Oct, 2021, 07:20: PM
Expert Answer
Given: a=9-4√5
square root of a minus fraction numerator 1 over denominator square root of a end fraction
equals fraction numerator a minus 1 over denominator square root of a end fraction
equals fraction numerator 9 minus 4 square root of 5 minus 1 over denominator square root of 9 minus 4 square root of 5 end root end fraction
equals fraction numerator 8 minus 4 square root of 5 over denominator square root of 9 minus 4 square root of 5 end root end fraction
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