Question

Find all real zeros in the function: f(x)= xcubed-9xsquared+20x-12

Answer 1

Use trial and error to determine a zero. If you test x=2, you will get:
\[\huge f(2)=2^3-9(2)^2+20(2)-12\]
\[\huge =0\]
Therefore:
\[\large x-2\]
Is a factor of the polynomial.
Use long division or other means to get the rest of the factored form.