Respuesta :

Distribute the common terms out, and then factor the rest
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nobillionaireNobley
f(x) = 9x^3 - 45x^2 + 36x
The zeros of f(x) are the values of x for which f(x) = 0

9x^3 - 45x^2 + 36x = 0
9x(x^2 - 5x + 4) = 0
9x(x - 1)(x - 4) = 0
x = 0, 1 and 4.