if a and b are the roots of x2=x+1 then the value of a2/b-b2/a is 
 

Dear student
if a and b are the roots of x2=x+1 then the value of a2/b+b2/a is 
Since a and b are the roots of the equation x2-x-1=0So, a+b=1and ab=-1So, a2b+b2a=a3+b3ab=a+ba2+b2-abab=a+ba+b2-2ab-abab=11-2-1-(-1)-1=-4

  • -4
What are you looking for?