1. **Problem 1: Simplify the polynomial expression**
Given: $$P(x) = (3x - 2)(2x^2 + 2x + 3) + 7$$
2. **Use the distributive property (FOIL for polynomials)**
Multiply each term in the first polynomial by each term in the second polynomial:
$$(3x)(2x^2) = 6x^3$$
$$(3x)(2x) = 6x^2$$
$$(3x)(3) = 9x$$
$$(-2)(2x^2) = -4x^2$$
$$(-2)(2x) = -4x$$
$$(-2)(3) = -6$$
3. **Combine all terms:**
$$6x^3 + 6x^2 + 9x - 4x^2 - 4x - 6 + 7$$
4. **Simplify by combining like terms:**
$$6x^3 + (6x^2 - 4x^2) + (9x - 4x) + (-6 + 7)$$
$$= 6x^3 + 2x^2 + 5x + 1$$
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5. **Problem 2a: Sketch a polynomial function with degree 3, negative leading coefficient, and 2 x-intercepts**
- Degree 3 means the highest power of $x$ is 3.
- Negative leading coefficient means the $x^3$ term has a negative coefficient.
- 2 x-intercepts means the polynomial crosses the x-axis at exactly two points.
Example function: $$y = -x^3 + 3x^2 - 2x$$
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6. **Problem 2b: Sketch a polynomial function with degree 4, positive leading coefficient, and 3 x-intercepts**
- Degree 4 means the highest power of $x$ is 4.
- Positive leading coefficient means the $x^4$ term has a positive coefficient.
- 3 x-intercepts means the polynomial crosses the x-axis at exactly three points.
Example function: $$y = x^4 - 5x^3 + 4x^2$$
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**Final answers:**
$$P(x) = 6x^3 + 2x^2 + 5x + 1$$
Example for 2a: $$y = -x^3 + 3x^2 - 2x$$
Example for 2b: $$y = x^4 - 5x^3 + 4x^2$$
Polynomial Simplify Sketch Fe6002
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