SOLUTION: Find the remainder if the polynomial 3x^100+5x^95-4x^38+2x^17 is divided by x+1

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Question 1136794: Find the remainder if the polynomial 3x^100+5x^95-4x^38+2x^17 is divided by x+1
Answer by ikleyn(52814) About Me  (Show Source):
You can put this solution on YOUR website!
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Substitute the value of x = -1 into the polynomial.


The value of the polynomial then will give you the remainder


    3*(-1)^100 + 5*(-1)^95 - 4*(-1)^38 + 2*(-1)^17 = 3*1 + 5*(-1) - 4*1 + 2*(-1) = 3 - 5 - 4 - 2 = -8.     ANSWER


It is based on the Remainder Theorem.


   Theorem   (the remainder theorem)
   1. The remainder of division the polynomial  f%28x%29  by the binomial  x-a  is equal to the value  f%28a%29  of the polynomial.
   2. The binomial  x-a  divides the polynomial  f%28x%29  if and only if the value of  a  is the root of the polynomial  f%28x%29,  i.e.  f%28a%29+=+0.
   3. The binomial  x-a  factors the polynomial  f%28x%29  if and only if the value of  a  is the root of the polynomial  f%28x%29,  i.e.  f%28a%29+=+0.


See the lessons
    - Divisibility of polynomial f(x) by binomial x-a and the Remainder theorem
    - Solved problems on the Remainder thoerem
in this site.


Also,  you have this free of charge online textbook in ALGEBRA-II in this site
    ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this online textbook under the topic
"Divisibility of polynomial f(x) by binomial (x-a). The Remainder theorem".

Save the link to this online textbook together with its description

Free of charge online textbook in ALGEBRA-I
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson

to your archive and use it when it is needed.


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