Xn power - XN-1 power + 1 / 4xn-2 power

Xn power - XN-1 power + 1 / 4xn-2 power


Xn power - XN-1 power + 1 / 4xn-2 power
=x^(n-2)(x²-x+1/4)
=x^(n-2)(x-1/2)²