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CBSE Class 9 Answered

Please solve this sum from Number Systems chapter class 9
question image
Asked by nvrithikashree | 23 Mar, 2018, 01:31: PM
answered-by-expert Expert Answer
begin mathsize 16px style fraction numerator 2 minus square root of 5 over denominator 2 plus 3 square root of 5 end fraction equals square root of 5 straight a plus straight b fraction numerator begin display style 2 minus square root of 5 end style over denominator begin display style 2 plus 3 square root of 5 end style end fraction cross times fraction numerator 2 minus 3 square root of 5 over denominator 2 minus 3 square root of 5 end fraction equals square root of 5 straight a plus straight b fraction numerator 4 minus 6 square root of 5 minus 2 square root of 5 plus 15 over denominator 4 minus 45 end fraction equals square root of 5 straight a plus straight b fraction numerator 19 minus 8 square root of 5 over denominator negative 41 end fraction equals square root of 5 straight a plus straight b fraction numerator 8 square root of 5 over denominator 41 end fraction minus fraction numerator begin display style 19 end style over denominator begin display style 41 end style end fraction equals square root of 5 straight a plus straight b straight a equals 8 over 41 space and space straight b equals fraction numerator negative 19 over denominator 41 end fraction end style
Answered by Sneha shidid | 23 Mar, 2018, 06:25: PM

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