Question

12th Grade Math Problem
I don't understand this question. Please explain.

When the polynomial P(x) = x^3 + 3x^2 -2Ax + 3, where A is a constant, is divided by x^2 + 1 we get a remainder equal to -5x. Find A.

Answer 1

Alright, do you know where to start?

Answer 2

No.

Answer 3

Alright, the first thing you are going to do is divide x(3 + 3x^2 -2Ax + 3) by (x^2 + 1).

What do you get?

Answer 4

-x(1 + 2A) I think

Answer 5

That's right.

-x(1 + 2A) = (What does it equal up to?)

Answer 6

It equals up to 5x

Answer 7

-(1 + 2A) = 5: polynomials are equal if their corresponding coefficient area equal.

You should know what to do next. What is your answer?

Answer 8

A = -3 right?

Answer 9

@undeadknight26 @Preetha @Destinymasha @e.mccormick @tester97 @Clalgee


-3 is the answer right?

Answer 10

@bibby @Squirrels @Compassionate @dhirensharma

Answer 11

@dan815 @nincompoop

Answer 12

@Ashleyisakitty

Answer 13

@Clalgee

Answer 14

@zepdrix @jim_thompson5910

Answer 15

Can you please check my answer?? I don't have much time to complete this quiz.

My answer is A=-3

Answer 16

@shampowbow

Answer 17

@karatechopper @camerondoherty

Answer 18

Yes! I'm here! I'm terribly sorry I wasn't available.

To answer your question, yes. A = -3 is the correct answer

Answer 19

FINALLY! THANK YOU SOO MUCH!

Answer 20

Your welcome :P
Good luck on your test!

Answer 21

@shampowbow Sure!