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Grade 12th passAlgebra

sir pls give answer of this question
If x+1/x=3 where x is not equal to 0 then the value of
x4-3x3-5x2-3x-1 / x4-1 is ??
options
a)5
b)7
C)2
d)3

Profile image of ABHISHEK VASHIST
10 Years agoGrade 12th pass
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1 Answer

Profile image of Asim
10 Years ago
x+ 1 = 3x
 x =( 3 \pm \sqrt{5}) / 2         put these values and check... or … x ^2  +  1/x^2 = 1   thats a hint, check it out its gonna help you a lot... TIY