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ICSE Class 9 Answered

Q. XI
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Asked by Rayeesa | 01 Jun, 2018, 04:14: PM
answered-by-expert Expert Answer
begin mathsize 16px style straight x squared minus open parentheses fraction numerator straight a plus straight b over denominator straight a end fraction plus fraction numerator straight a over denominator straight a plus straight b end fraction close parentheses straight x plus 1 equals 0 straight x squared minus open parentheses fraction numerator open parentheses straight a plus straight b close parentheses squared plus straight a squared over denominator straight a squared plus ab end fraction close parentheses straight x plus 1 equals 0 straight a squared straight x squared plus abx squared minus 2 straight a squared straight x minus 2 abx squared minus straight b squared straight x plus straight a squared plus ab equals 0 straight x squared open parentheses straight a squared plus ab minus 2 ab close parentheses minus straight x open parentheses 2 straight a squared plus straight b squared close parentheses plus straight a squared plus ab equals 0 by space formula space method straight x equals fraction numerator open parentheses 2 straight a squared plus straight b squared close parentheses plus-or-minus square root of open parentheses 2 straight a squared plus straight b squared close parentheses squared minus 4 open parentheses straight a squared plus ab minus 2 ab close parentheses open parentheses straight a squared plus ab close parentheses end root over denominator 2 open parentheses straight a squared plus ab minus 2 ab close parentheses end fraction simplify space to space get space the space ans. end style
Answered by Arun | 03 Jun, 2018, 09:17: AM

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