Math Problem Statement

Use synthetic division and the Remainder Theorem to find​ P(a).

​P(x)equals=3 x cubed minus x squared plus 6 x plus 6 3x3−x2+6x+6​;

aequals=1/3

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Part 1

Upper P left parenthesis one third right parenthesisP13equals=enter your response here

​(Simplify your answer. Type an integer or a​ fraction.)

Solution

To evaluate P(13)P\left(\frac{1}{3}\right) using synthetic division and the Remainder Theorem:

Step 1: Set up synthetic division

The polynomial is P(x)=3x3x2+6x+6P(x) = 3x^3 - x^2 + 6x + 6, and we want to evaluate P(13)P\left(\frac{1}{3}\right).

  • The coefficients of P(x)P(x) are: 3,1,6,63, -1, 6, 6.
  • The value of a=13a = \frac{1}{3} is the divisor.

Step 2: Synthetic division process

Write down the coefficients:

31663 \quad -1 \quad 6 \quad 6

Use 13\frac{1}{3} as the divisor:

  1. Bring down the first coefficient (33) unchanged.
  2. Multiply 33 by 13\frac{1}{3}: 3×13=13 \times \frac{1}{3} = 1.
  3. Add 1+1=0-1 + 1 = 0.
  4. Multiply 00 by 13\frac{1}{3}: 0×13=00 \times \frac{1}{3} = 0.
  5. Add 6+0=66 + 0 = 6.
  6. Multiply 66 by 13\frac{1}{3}: 6×13=26 \times \frac{1}{3} = 2.
  7. Add 6+2=86 + 2 = 8.

The synthetic division table looks like this:

\frac{1}{3} & 3 & -1 & 6 & 6 \\ & & 1 & 0 & 2 \\ \hline & 3 & 0 & 6 & 8 \\ \end{array}$$ ### Step 3: Interpret the result The remainder is $$8$$. According to the Remainder Theorem, $$P\left(\frac{1}{3}\right) = 8$$. ### Final Answer: $$P\left(\frac{1}{3}\right) = 8$$ --- Would you like more details or examples? ### Related Questions: 1. How does the Remainder Theorem relate to synthetic division? 2. What is the purpose of synthetic division in polynomial evaluation? 3. Can synthetic division be used to factor polynomials? If so, how? 4. What happens if the divisor is not a fraction (e.g., $$a = 2$$)? 5. How does synthetic division differ from long division of polynomials? ### Tip: When using synthetic division with fractional divisors like $$\frac{1}{3}$$, ensure all arithmetic operations with fractions are carefully simplified.

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Math Problem Analysis

Mathematical Concepts

Polynomial Evaluation
Synthetic Division
Remainder Theorem

Formulas

Synthetic Division: Polynomial coefficients are divided by a given divisor to simplify calculations.
Remainder Theorem: If a polynomial P(x) is divided by (x - a), the remainder is P(a).

Theorems

Remainder Theorem

Suitable Grade Level

Grades 10-12