1. **State the problem:** Divide the polynomial $3x^3 + 2x^2 - x + 4$ by the binomial $x - 1$.
2. **Formula and method:** We use polynomial long division or synthetic division to divide polynomials. The goal is to find quotient $Q(x)$ and remainder $R(x)$ such that:
$$3x^3 + 2x^2 - x + 4 = (x - 1)Q(x) + R(x)$$
3. **Perform polynomial long division:**
- Divide the leading term $3x^3$ by $x$ to get $3x^2$.
- Multiply $3x^2$ by $x - 1$ to get $3x^3 - 3x^2$.
- Subtract this from the original polynomial:
$$ (3x^3 + 2x^2) - (3x^3 - 3x^2) = 5x^2 $$
- Bring down the next term $-x$ to get $5x^2 - x$.
- Divide $5x^2$ by $x$ to get $5x$.
- Multiply $5x$ by $x - 1$ to get $5x^2 - 5x$.
- Subtract:
$$ (5x^2 - x) - (5x^2 - 5x) = 4x $$
- Bring down the last term $+4$ to get $4x + 4$.
- Divide $4x$ by $x$ to get $4$.
- Multiply $4$ by $x - 1$ to get $4x - 4$.
- Subtract:
$$ (4x + 4) - (4x - 4) = 8 $$
4. **Result:** Quotient is $3x^2 + 5x + 4$ and remainder is $8$.
5. **Final answer:**
$$\frac{3x^3 + 2x^2 - x + 4}{x - 1} = 3x^2 + 5x + 4 + \frac{8}{x - 1}$$
Polynomial Division 032247
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