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If x is real, then the expression (x²+34x-71)/(x²+2x-7) lies b/w 4 and 7 lies b/w 5 and 9 has no value b/w 4 and 7 has no value b/w 5 and 9 Plz solve it...

 If x is real, then the expression (x²+34x-71)/(x²+2x-7) 



  1. lies b/w 4 and 7

  2. lies b/w 5 and 9

  3. has no value b/w 4 and 7

  4. has no value b/w 5 and 9






 


       Plz solve it...


 




Grade:12

1 Answers

Chetan Mandayam Nayakar
312 Points
11 years ago

let (x^2 +34x-71)=k(x^2+2x-7),this is a quadratic equation in x which has real roots/values of x if the discriminant, which is a function of 'k' is non-negative, solve this inequality to obtain the answer.

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