Question

How do you write a polynomial function in standard form with the zeroes x=-2,1,4?

Answer 1

`f(x) = (x+2)(x-1)(x-4)`

`= (x^2+x-2)(x-4)`

`= (x^2+x-2)x - (x^2+x-2)4`

`= x^3+x^2-2x-4x^2-4x+8`

`= x^3-3x^2-6x+8`