Question

how doi solve this problem? Use the Remainder Theorem to find the remainder when 2x^3 – x^2 – 3x + 7 is divided by x + 2. State whether the binomial is a factor of the polynomial.

Answer 1

Well, the remainder theorem states that to get the remainder when a polynomial is divided by a linear divisor (x - a)
then you simply evaluate f(a), and that's your remainder

Answer 2

i dont understand

Answer 3

You're dividing by x+2, are you not?
So, if
x+2 = x - a
then a = ?

Answer 4

2?

Answer 5

Nope...
x + 2 = x - 2 ?
I don't think so :)

Answer 6

i dont know then

Answer 7

a is -2.

Answer 8

So now, I want you to evaluate the polynomial, at x = -2, and tell me what you get.

Answer 9

how?

Answer 10

Well, replace all the x's with -2, and just solve.

Answer 11

so. -64-4+6+7?

Answer 12

this doesnt look right

Answer 13

does this help?

Answer 14

YES

Answer 15

did you learn it this way or by synthetic division?

Answer 16

my teacher did synthetic division but my my old tutor did this way so.

Answer 17

are you in alg 2?

Answer 18

precal

Answer 19

can you help me with a question please?

Answer 20

possibly what is it

Answer 21

how do you write a quadratic equation with integral coefficients having the roots -5/2 and 1

Answer 22

do you know how to do this?

Answer 23

one sec

Answer 24

okai

Answer 25

no i dont remember this sorry

Answer 26

its okay. thanks though :)

Answer 27

np

Answer 28

thanks for the medal too!!

Answer 29

:)