Possible value of x for equation
(x^2-x-1) ^ (x+2)=1 ?

• ans are 0,1,2,-2
• 9 years agoHelpfull: Yes(8) No(6)
• One of the solution is x= -2
• 9 years agoHelpfull: Yes(3) No(1)
• If we take any power on 1.it always remain 1.
  so x^2-x-1=1
  Now..
  X^2-x-2=0
  so answer is -1or 2.
• 9 years agoHelpfull: Yes(2) No(6)
• x=-2 because any value to the power 0 is equals to 1.
• 9 years agoHelpfull: Yes(1) No(1)
• -1,-2,0,2 possbile no valve
• 9 years agoHelpfull: Yes(1) No(0)
• ans will be -2 because if u put x=-2 after than power will be zero.
  and any no. power is 0 than its values will be 0.
  
• 9 years agoHelpfull: Yes(1) No(0)
• Select the least possible integer i.e 0
• 9 years agoHelpfull: Yes(0) No(0)
• solution- 0,1,-2
  just try it....
  
• 9 years agoHelpfull: Yes(0) No(0)
• Putting x=0, -2
  It can be said that the following equation equals 1
• 9 years agoHelpfull: Yes(0) No(0)
• (2^2-2-1)^(2+2)= 1
• 9 years agoHelpfull: Yes(0) No(0)
• x=0,-1,-2,2 also satisfies the equation.
• 9 years agoHelpfull: Yes(0) No(0)
• ans -2 -1 0 1 2
• 9 years agoHelpfull: Yes(0) No(0)
• Ans...=-1
  
  Reason
  
  Given,
  (x^2-x-1) ^ (x+2)=1
  By hit and trail method
  =>putting -1 in the eqaution we get
  LHS, (1+1-1)^(-1+2)=1^1=1
  hence the possible value of x=-1
• 9 years agoHelpfull: Yes(0) No(0)
• It should be 1 only when (x+2)=1, so x=-2.
• 9 years agoHelpfull: Yes(0) No(0)
• -2,-1,0,2 is the answer..
• 9 years agoHelpfull: Yes(0) No(0)