Question

Determine the zeros of f(x) = x3 – 12x2 + 28x – 9

Answer 1

there are 2 ways to go about doing it. If you have a graphics calculator, punch this equation into the calc then find the points where the curve intersect with the x axis, these are the roots.

Another way is by trial and error. using simple values like 1, -1, 2,-2 etc.

Answer 2

The calculator is the best option

Answer 3

http://www.wolframalpha.com/input/?i=x^3+%E2%80%93+12x^2+%2B+28x+%E2%80%93+9

Answer 4

wolf works too lol