2 4*x + 7*x - 4
4*x^2 + 7*x - 4
/ _____\ / _____\ | 7 \/ 113 | | 7 \/ 113 | |x + - - -------|*|x + - + -------| \ 8 8 / \ 8 8 /
(x + 7/8 - sqrt(113)/8)*(x + 7/8 + sqrt(113)/8)
2 -4 + 4*x + 7*x
-4 + 4*x^2 + 7*x
-4.0 + 4.0*x^2 + 7.0*x
-4 + x*(7 + 4*x)