Question

if zeros of a polynomial x³ + 5x²+7x+3 are -1and-3 then find the 3rd zero​

Answer 1

Answer:

-1

Step-by-step explanation:

-1, -3 are two zeros

by Horners method

-1 | 1 5 7 3

| -1 -4 -3

|-------------------------

-3 | 1 4 3 0

| -3 -3

|--------------------------

1 1 0

remaining linear polynomial X+1 = 0

X= -1

third zero = -1