10分~~~ IF X+(1 除以X )=5...

首先
計左(X+1 / X ) 2次方 = (5) 2次方
X^2 + 2 + (1/X^2) = 25
X^2 + 1 + (1/X^2) = 24

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X 乘 X
---------------------------------
X 4次方 + X 2次方 +1

將佢上下掉轉先
變左
X 4次方 + X 2次方 +1
---------------------------------
X 乘 X

= X^2 + 1 + (1/X^2)

= 24 (BY 上面)

之後將24上下掉多次
(因為之前轉左1次)
所以ANS係 1/24

X+1 / X =5
X+1=5X
5X-X=1
4X=1
X=1/4
X乘x
=1/4 * 1/4
=1/16
X 4次方 + X 2次方 +1
=(1/4)^4 + (1/4)^2+1
=1/256 + 1/16 + 1
=17/256 + 1
=1 17/256