1. **State the problem:** We need to divide the polynomial $9x^3 + 18x^2 - 4x + 8$ by the binomial $3x + 2$ and express the result in the form of a quotient plus a remainder over the divisor.
2. **Recall the division formula:** For polynomials, dividing $P(x)$ by $D(x)$ gives
$$P(x) = Q(x) \cdot D(x) + R(x)$$
where $Q(x)$ is the quotient and $R(x)$ is the remainder with degree less than $D(x)$.
3. **Perform polynomial long division:**
- Divide the leading term $9x^3$ by $3x$ to get $3x^2$.
- Multiply $3x^2$ by $3x + 2$ to get $9x^3 + 6x^2$.
- Subtract this from the original polynomial:
$$9x^3 + 18x^2 - 4x + 8 - (9x^3 + 6x^2) = 12x^2 - 4x + 8$$
4. **Continue division:**
- Divide $12x^2$ by $3x$ to get $4x$.
- Multiply $4x$ by $3x + 2$ to get $12x^2 + 8x$.
- Subtract:
$$12x^2 - 4x + 8 - (12x^2 + 8x) = -12x + 8$$
5. **Continue division:**
- Divide $-12x$ by $3x$ to get $-4$.
- Multiply $-4$ by $3x + 2$ to get $-12x - 8$.
- Subtract:
$$-12x + 8 - (-12x - 8) = 16$$
6. **Write the final result:**
$$\frac{9x^3 + 18x^2 - 4x + 8}{3x + 2} = 3x^2 + 4x - 4 + \frac{16}{3x + 2}$$
**Answer:** $3x^2 + 4x - 4 + \frac{16}{3x + 2}$
Polynomial Division 209B4F
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