Question

Can someone help me out please ill fan and medal :)

Answer 1

Divide using synthetic divison
-3x^3+11x^2-x+20 by (x-4)

Answer 2

as always, I ask that you post your actual question first, and then (if you must), ask for help from a specific person.

Answer 3

I know the answer is -3x^2-x-5 but can someone explain why

Answer 4

Divide using synthetic divison
-3x^3+11x^2-x+20 by (x-4)

Have you successsfully done synth. div. before?

Answer 5

yes but its still very new to me

Answer 6

Set up synth div. I'll be back to help you with the process.

Answer 7

how do i do that? @mathmale

Answer 8

You are dividing -3x^3+11x^2-x+20 by x-4.

Set your divisor (x-4) = 0 and solve for x. x = 4. x=4 is thus your divisor in synth. div.

Now you borrow the coefficients of the polynomial -3x^3+11x^2-x+20

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and write the problem (for synth div) as 4 / -3 11 -1 20

Answer 9

How much of this is familiar to you?

Answer 10

okay so what happenes after that

Answer 11

@mathmale

Answer 12

You haven't answered my question.

I do need to know what you know about synth. div. You led me to believe you have seen it before, but are not confident about using it.

Answer 13

im not confident using it thats why i wanted to see it so then i know what steps to follow for similar problems :)