# Question:How do show all roots in the equation with Bairstow Method?

## Question:How do show all roots in the equation with Bairstow Method?

Maple 2018

I'm trying show the all roots of equations using Bairstow's methodt, but only shows the roots of Quadratic Factor and don't show the others roots of the other equation. Thanks

This the code:

 >
 1   -0.6441699    0.1381090       0.3558        1.138   2   -0.5111131    0.4697336       0.1331       0.3316   3   -0.4996865    0.5002023      0.01143      0.03047   4   -0.5000001    0.5000000   -0.0003136   -0.0002023   5   -0.5000000    0.5000000    6.413e-08    9.268e-09   6   -0.5000000    0.5000000            0            0 Q(x)=(1)x^3 + (-4)x^2 + (5.25)x^1 + (-2.5) Remainder: 0(x-(-0.5))+(0) Quadratic Factor: x^2-(-0.5)x-(0.5) Zeros: 0.4999999993, -0.9999999997

Only show two roots: 0.4999999993, -0.9999999997, but the other roots are missing: 2, -1, 1+0.5i, 1-0.5i approximately, any solution?

I think it's in this part, but I can't think of how to implement it to get the missing roots.