f(x)=x3−4x2+9x−10f(x) = x^3 - 4x^2 + 9x - 10f(x)=x3−4x2+9x−10
Use the factor theorem to show that (x−2)(x - 2)(x−2) is a factor of f(x)f(x)f(x).
Show that f(x)=0f(x) = 0f(x)=0 only has one real root.
