Respuesta :

mhanifa

Answer:

See below

Step-by-step explanation:

Given function

  • f(x)=x³ + 3x²- 7x - 21

We can find its factors:

  • x³ + 3x² - 7x - 21 =
  • x²(x + 3) - 7(x + 3) =
  • (x² - 7)(x + 3)

We can conclude that the given polynomial function is fully divisible by (x + 3) and the quotient is (x² - 7)

Also one of zeros of the function is -3

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