If `x^2-8x-1=0` then `x^2+1/x^2=`

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 ?

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

If 4x^2-6x+1=0 , then the value of 8x^3 +(8x^3)^-1 is: यदि 4x^2-6x+1=0 है, तो 8x^3 +(8x^3)^-1 का मान ज्ञात करें |

If x_1,y_1 " are roots of " x^2+8x-20=0, x_1,y_1 " are the roots of " 4x^2+32x-57=0 and x_3,y_3 " are the roots of " 9x^2+72x-112=0 , then the points (x_1,y_1 )(x_2,y_2) and (x_3,y_3) where x_1 lt y_1 for i=1,2,3