1. **State the problem:** We need to analyze the function $$y=\frac{(x+2)^3}{(x+1)^2}$$.
2. **Recall the formula and rules:** This is a rational function where the numerator is $(x+2)^3$ and the denominator is $(x+1)^2$.
3. **Find the domain:** The denominator cannot be zero, so $x+1 \neq 0 \Rightarrow x \neq -1$.
4. **Find intercepts:**
- **x-intercept(s):** Set numerator equal to zero: $(x+2)^3=0 \Rightarrow x=-2$.
- **y-intercept:** Set $x=0$: $$y=\frac{(0+2)^3}{(0+1)^2}=\frac{8}{1}=8$$.
5. **Simplify and analyze behavior:**
No common factors to cancel between numerator and denominator.
6. **Vertical asymptote:** At $x=-1$ because denominator is zero and numerator is not zero there.
7. **Horizontal or oblique asymptote:** Degree numerator = 3, degree denominator = 2, so no horizontal asymptote; instead, there is an oblique asymptote.
8. **Find oblique asymptote by polynomial division:**
Divide $(x+2)^3$ by $(x+1)^2$.
Expand numerator: $$(x+2)^3 = x^3 + 6x^2 + 12x + 8$$
Expand denominator: $$(x+1)^2 = x^2 + 2x + 1$$
Divide: $$\frac{x^3 + 6x^2 + 12x + 8}{x^2 + 2x + 1}$$
First term: $x^3 \div x^2 = x$
Multiply back: $x(x^2 + 2x + 1) = x^3 + 2x^2 + x$
Subtract: $$(x^3 + 6x^2 + 12x + 8) - (x^3 + 2x^2 + x) = 4x^2 + 11x + 8$$
Next term: $4x^2 \div x^2 = 4$
Multiply back: $4(x^2 + 2x + 1) = 4x^2 + 8x + 4$
Subtract: $$(4x^2 + 11x + 8) - (4x^2 + 8x + 4) = 3x + 4$$
So quotient is $x + 4$ with remainder $3x + 4$.
Oblique asymptote: $$y = x + 4$$
9. **Summary:**
- Domain: $x \neq -1$
- x-intercept: $x = -2$
- y-intercept: $y = 8$
- Vertical asymptote: $x = -1$
- Oblique asymptote: $y = x + 4$
This completes the analysis of the function.
Rational Function Analysis 5F3Bd6
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.