group and undistribute f(x)=(2x^3-x^2)+(4x-2) f(x)=(x^2)(2x-1)+(2)(2x-1) the common is (2x-1) reverse distribute like this: ba+ca=a(b+c) so f(x)=(2x-1)(x^2+2)
set to zero 2x-1=0 2x=1 x=1/2
x^2+2=0 x^2=-2 no rational number works (you need complex numbers)
