2 4*x - 4*x - 1
4*x^2 - 4*x - 1
2 -1 - 4*x + 4*x
-1 - 4*x + 4*x^2
/ ___\ / ___\ | 1 \/ 2 | | 1 \/ 2 | |x + - - + -----|*|x + - - - -----| \ 2 2 / \ 2 2 /
(x - 1/2 + sqrt(2)/2)*(x - 1/2 - sqrt(2)/2)
-1.0 + 4.0*x^2 - 4.0*x
-1 + 4*x*(-1 + x)