Question

Use Synthetic Division to divide

x2 + 10x + 21 by x + 3

Answer 1

synthetic division is easy to do but hard to explain in a forum like this
try to understand this link would be my first advice, and let me know what you don't understand

Answer 2

http://www.purplemath.com/modules/synthdiv.htm

Answer 3

this the answer 7x - 21

Answer 4

so you just want me to walk you through it?

Answer 5

yes

Answer 6

polynomial division is done by dividing a polynomial by an expression of the for \[(x-a)\]so first tell me; what is \( a\) in your case?

Answer 7

expression of the form*

Answer 8

i think i got it

Answer 9

x - 7

Answer 10

check your work; does\[(x+3)(x-7)=x^2+10x+21\]???

Answer 11

no

Answer 12

so then your answer is not right :(

Answer 13

I can tell you that just by eyeball you are close, and you can fix it if you can spot how to make the two sides equal

Answer 14

lol

Answer 15

x + 7

Answer 16

there is only one problem:
3(-7)=-21 not 21
so maybe you can just fix that, though that doesn't explain the synthetic division part...

Answer 17

right

Answer 18

though as I say, I'm not sure if you used synthetic division to get your answer

Answer 19

:)