若x分之一+x=3,求（x的4次方+x的二次方+x分之1的2次方）分之一.急求

1/x + x = 3x^2-3x+1=0x=(3±根号5)/2x^2=3x-1=3±根号5x^4=14±2根号51/x + x = 3(1/x + x)^2 = 3^21/x^2 + 2 + x^2 = 91/x^2 + x^2 = 71 / { x^4 + x^2 + (1/x)^2 }= 1 / { x^4 +（x^2 + 1/x^2 }= 1 / { x^4 +（x^...