Solve Polynomial Division: Find K Given Remainder of 3

Click For Summary
SUMMARY

The problem involves finding the value of k in the polynomial 4x² + 9x + k when divided by x - 1, given that the remainder is 3. To solve for k, one can utilize the Remainder Theorem, which states that the remainder of a polynomial P(x) divided by x - a is P(a). By substituting x = 1 into the polynomial, the equation becomes 4(1)² + 9(1) + k = 3. Solving this yields k = -10.

PREREQUISITES
  • Understanding of polynomial functions
  • Familiarity with the Remainder Theorem
  • Basic algebraic manipulation skills
  • Knowledge of polynomial division concepts
NEXT STEPS
  • Study the Remainder Theorem in depth
  • Practice polynomial division techniques
  • Explore applications of polynomial functions in calculus
  • Learn about synthetic division as an alternative method
USEFUL FOR

Students in algebra or calculus courses, educators teaching polynomial functions, and anyone looking to strengthen their understanding of polynomial division and the Remainder Theorem.

HelloMotto
Messages
73
Reaction score
0

Homework Statement


The remainder is 3 when 4x^2 + 9x + k is divided by x-1
Im suppose to find the K. I am just confused because this question they give me the remainder..so what am i suppose to do with it?
 
Physics news on Phys.org
Perform the usual operation, continue bringing k down and then at the end just solve for k by setting it equal to what your remainder should be.
 
thank you
 
You could also use the fact that when a polynomial, P(x), is divided by x- a, the remainder is exactly P(a). You don't need to do any division at all.
 

Similar threads

  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 5 ·
Replies
5
Views
2K
Replies
9
Views
3K
  • · Replies 15 ·
Replies
15
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 17 ·
Replies
17
Views
2K
Replies
3
Views
2K
  • · Replies 22 ·
Replies
22
Views
4K