Find all the zeros of 2x4+x3-14x2-19x-6 two of its zeros are -2 and -1

Step-by-step explanation:

Consider polynomial

If x=-2 is its zero, then you can divide the polynomial by and get

If x=-1, then the polynomial can be rewritten as

The quadratic polynomial has roots

Then the polynomial has zeros

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are