Question

Find the polyomial whose roots are 1, -1,-2

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

It is a root

So we take first factor as (x-1) now suppose the second factor is a quadratic polynomial (x^2-3x+2) and this factor has root -1,-2

Now, multiple both factor we had choose (x-1)(x^2-3x+2)=x^3-4x^2+5x-2