Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x), and express P in the form P(x) = D(x) · Q(x) + R(x). P(x) = x4 + 3x3 - 18x, D(x) = x - 4

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**Polynomial Division Instructions**

Two polynomials \( P \) and \( D \) are given. Use either synthetic or long division to divide \( P(x) \) by \( D(x) \), and express \( P \) in the form \( P(x) = D(x) \cdot Q(x) + R(x) \).

\[ P(x) = x^4 + 3x^3 - 18x \]

\[ D(x) = x - 4 \]

**Division Box:**

\[ P(x) = \boxed{} \]

**Explanation:**

To find the quotient \( Q(x) \) and the remainder \( R(x) \), one must perform polynomial division. Start by using either synthetic division or long division:

1. **Synthetic Division**: Suitable for dividing by linear divisors.
   - Use the root of \( D(x) = 0 \), which is \( x = 4 \), as the divisor.
   - List the coefficients of \( P(x) \).
   - Follow the synthetic division process, writing the final result in terms of quotient and remainder.

2. **Long Division**: 
   - Arrange \( P(x) \) and divide by \( D(x) \) using traditional long division.
   - Continue dividing until the degree of the remaining polynomial is less than the degree of \( D(x) \).
   - Express the result as a combination of quotient and remainder.

By performing these steps, you will express \( P(x) \) in the desired form.
Transcribed Image Text:**Polynomial Division Instructions** Two polynomials \( P \) and \( D \) are given. Use either synthetic or long division to divide \( P(x) \) by \( D(x) \), and express \( P \) in the form \( P(x) = D(x) \cdot Q(x) + R(x) \). \[ P(x) = x^4 + 3x^3 - 18x \] \[ D(x) = x - 4 \] **Division Box:** \[ P(x) = \boxed{} \] **Explanation:** To find the quotient \( Q(x) \) and the remainder \( R(x) \), one must perform polynomial division. Start by using either synthetic division or long division: 1. **Synthetic Division**: Suitable for dividing by linear divisors. - Use the root of \( D(x) = 0 \), which is \( x = 4 \), as the divisor. - List the coefficients of \( P(x) \). - Follow the synthetic division process, writing the final result in terms of quotient and remainder. 2. **Long Division**: - Arrange \( P(x) \) and divide by \( D(x) \) using traditional long division. - Continue dividing until the degree of the remaining polynomial is less than the degree of \( D(x) \). - Express the result as a combination of quotient and remainder. By performing these steps, you will express \( P(x) \) in the desired form.
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