davisrivers12
davisrivers12 davisrivers12
  • 19-10-2020
  • Mathematics
contestada

What is the remainder when a^3 - 4 is divided by a+2?
a)0
b)-6
c)-2
d)-12

Respuesta :

elcharly64
elcharly64 elcharly64
  • 20-10-2020

Answer:

The remainder is -12. Choice d)

Step-by-step explanation:

The Remainder Theorem

The polynomial remainder theorem states that the remainder of the division of a polynomial f(x) by (x-r) is equal to f(r).

We have the polynomial

[tex]P(a)= a^3 - 4[/tex]

To evaluate the remainder when P is divided by a+2, we only have to find P(-2):

[tex]P(-2)= (-2)^3 - 4[/tex]

[tex]P(-2)= -8 - 4=-12[/tex]

The remainder is -12. Choice d)

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