Math Problem Statement

Find the indicated value of the polynomial P(x) = 2x^5 + 3x^2 - 2x + 1 using the Remainder Theorem; find P(-2).

Solution

The problem in the image is asking to find the indicated value of the polynomial P(x)=2x5+3x22x+1P(x) = 2x^5 + 3x^2 - 2x + 1 at x=2x = -2, using the Remainder Theorem.

The Remainder Theorem states that if a polynomial P(x)P(x) is divided by (xa)(x - a), the remainder of that division is P(a)P(a). In this case, we are asked to find P(2)P(-2).

Let's evaluate P(x)P(x) at x=2x = -2:

P(x)=2x5+3x22x+1P(x) = 2x^5 + 3x^2 - 2x + 1

Substitute x=2x = -2:

P(2)=2(2)5+3(2)22(2)+1P(-2) = 2(-2)^5 + 3(-2)^2 - 2(-2) + 1

Simplify step-by-step:

P(2)=2(32)+3(4)2(2)+1P(-2) = 2(-32) + 3(4) - 2(-2) + 1

P(2)=64+12+4+1P(-2) = -64 + 12 + 4 + 1

P(2)=64+17P(-2) = -64 + 17

P(2)=47P(-2) = -47

Thus, the value of the polynomial P(x)P(x) at x=2x = -2 is 47-47.

Would you like more details or have any questions?

Here are some related questions you might explore:

  1. How can you apply the Remainder Theorem to different polynomials?
  2. What is the Factor Theorem, and how does it relate to the Remainder Theorem?
  3. How would synthetic division be used to verify this result?
  4. What is the significance of evaluating polynomials at specific points?
  5. How can graphing polynomials help visualize the result of the Remainder Theorem?

Tip: When using the Remainder Theorem, always check if the polynomial can be simplified further before substituting the value for quick computation.

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Math Problem Analysis

Mathematical Concepts

Algebra
Polynomials
Remainder Theorem

Formulas

P(x) = 2x^5 + 3x^2 - 2x + 1
Remainder Theorem: P(a) = R when dividing by (x - a)

Theorems

Remainder Theorem

Suitable Grade Level

Grades 10-12