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ICSE Class 10 Answered

2nd and 3rd equation plz solve
Asked by lovemaan5500 | 12 Dec, 2017, 06:30: AM
answered-by-expert Expert Answer
begin mathsize 16px style Given space equation space colon space 12 open parentheses fraction numerator straight x plus 4 over denominator 4 straight x minus 1 end fraction close parentheses minus 29 square root of open parentheses fraction numerator straight x plus 4 over denominator 4 straight x minus 1 end fraction close parentheses end root plus 14 equals 0 Let space fraction numerator straight x plus 4 over denominator 4 straight x minus 1 end fraction equals straight a rightwards double arrow square root of fraction numerator straight x plus 4 over denominator 4 straight x minus 1 end fraction end root equals square root of straight a Then comma space equation space becomes 12 straight a minus 29 square root of straight a plus 14 equals 0 rightwards double arrow 12 straight a minus 21 square root of straight a minus 8 square root of straight a plus 14 equals 0 rightwards double arrow 3 square root of straight a open parentheses 4 square root of straight a minus 7 close parentheses minus 2 open parentheses 4 square root of straight a minus 7 close parentheses equals 0 rightwards double arrow open parentheses 4 square root of straight a minus 7 close parentheses open parentheses 3 square root of straight a minus 2 close parentheses equals 0 rightwards double arrow square root of straight a equals 7 over 4 space or space 2 over 3 rightwards double arrow straight a equals 49 over 16 space or space 4 over 9 When space straight a equals 49 over 16 rightwards double arrow fraction numerator straight x plus 4 over denominator 4 straight x minus 1 end fraction equals 49 over 16 rightwards double arrow 16 straight x plus 64 equals 196 straight x minus 49 rightwards double arrow 196 straight x minus 16 straight x equals 64 plus 49 rightwards double arrow 180 straight x equals 113 rightwards double arrow straight x equals 113 over 180 When space straight a equals 4 over 9 rightwards double arrow fraction numerator straight x plus 4 over denominator 4 straight x minus 1 end fraction equals 4 over 9 rightwards double arrow straight x equals 40 over 7 end style
Answered by Rashmi Khot | 12 Dec, 2017, 10:48: AM

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