If we know that the power of X + X + 1 / x = 1 / 4, then the power of 3x is 5x / 4 - 15x + 5=
x²/(x^4+x²+1)=1/4
x^4+x²+1=4x²
So x ^ 4-3x & # 178; + 1 = 0
Multiply by 5 on both sides
5x^4-15x²+5=0
So (5x ^ 4-15x & # 178; + 5) / 3x & # 178; = 0
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