" If "x^(2)-x-1=0," then the value of "x^(3)-2x+1" is "

If x^2 - 3x +1=0, then the value of x +1/x is

If x^(2)-3x+1=0 , then one of the values of (x^(2)-8x-1)/(x^(3)+1//x) is :

If x ^(2) - 3 sqrt2 x +1 = 0, then the value of x ^(3) + (1)/(x ^(3)) is :

If x^(4) - 3x^(2) - 1 = 0 , then the value of (x^(6)-3x^(2)+(3)/(x^(2))-(1)/(x^(6))+1) is :

If x^2-3x-1=0 , then the value of (x^2+ 8x-1)(x^3+x^(-1))^-1 is: यदि x^2-3x-1=0 है, तो (x^2+ 8x-1)(x^3+x^(-1))^-1 का मान क्या होगा ?