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CBSE Class 9 Answered

IF X =7-4*ROOT 3 THEN FIND X-1/X
I REALLY NEED HELP WITH THIS AND FAST
 
Asked by Kezia | 16 Apr, 2016, 07:47: PM
answered-by-expert Expert Answer
 
begin mathsize 12px style bold x bold equals bold 7 bold minus bold 4 square root of bold 3
bold rightwards double arrow bold 1 over bold x bold equals fraction numerator bold 1 over denominator bold 7 bold minus bold 4 square root of bold 3 end fraction bold equals fraction numerator bold 1 over denominator bold 7 bold minus bold 4 square root of bold 3 end fraction bold cross times fraction numerator bold 7 bold plus bold 4 square root of bold 3 over denominator bold 7 bold plus bold 4 square root of bold 3 end fraction bold equals fraction numerator bold 7 bold plus bold 4 square root of bold 3 over denominator open parentheses bold 7 close parentheses to the power of bold 2 bold minus open parentheses bold 4 square root of bold 3 close parentheses to the power of bold 2 end fraction bold equals fraction numerator bold 7 bold plus bold 4 square root of bold 3 over denominator bold 49 bold minus bold 48 end fraction bold equals bold 7 bold plus bold 4 square root of bold 3
bold rightwards double arrow bold x bold minus bold 1 over bold x bold equals bold 7 bold minus bold 4 square root of bold 3 bold minus open parentheses bold 7 bold plus bold 4 square root of bold 3 close parentheses bold equals bold 7 bold minus bold 4 square root of bold 3 bold minus bold 7 bold minus bold 4 square root of bold 3 bold equals bold minus bold 8 square root of bold 3 end style
Answered by Rashmi Khot | 18 Apr, 2016, 11:59: AM
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