Question

If-5 is the zero of the polynomial x3 - 5x2 - 29x + 105 Then find the other two roots.​

Answer 1

Solution:

1.).Since -5 is the Zero of the polynomial we will divide the the polynomial with x + 5

(x-5=0), (x=5)

2.). after doing the division we obtained a quadratic expression x^2 - 10x +21

3.). we can factorise it with the "middle term splitting" method.

4.). after factorising the quadratic polynomial we the final answer. Which is

Answer: (x-3) (x-7)

Hope this helps !

Thanks.