What is a cubic polynomial function in standard for with the zeros of -1,1,4?

Answer 1

(x+1)(x-1)(x-4) =

(x^2-1)(x-4) =

x^3 -4x^2 -x + 4

just take each zero and change its sign, then stick an x in front of it

4 becomes -4 then add the x to get a factor of x-4. Same with the 1 and -1

then multiply the 3 factors together to get the cubic polynomial.