1. **Problem Statement:**
We are given four rectangles with different lengths and widths. We need to write expressions for their perimeter and area, then simplify these expressions.
2. **Formulas:**
- Perimeter of a rectangle: $$P = 2(\text{length} + \text{width})$$
- Area of a rectangle: $$A = \text{length} \times \text{width}$$
3. **Top-left rectangle:**
- Length = $2y$
- Width = $y - 2$
**Perimeter:**
$$P = 2(2y + (y - 2)) = 2(2y + y - 2) = 2(3y - 2) = 6y - 4$$
**Area:**
$$A = 2y \times (y - 2) = 2y(y - 2) = 2y^2 - 4y$$
4. **Top-right rectangle:**
- Length = $2x + 4$
- Width = $7$
**Perimeter:**
$$P = 2((2x + 4) + 7) = 2(2x + 11) = 4x + 22$$
**Area:**
$$A = (2x + 4) \times 7 = 14x + 28$$
5. **Bottom-left rectangle:**
- Length is unlabeled (assumed as $2c + 2x$ from the problem statement)
- Width = $7y - 2x$
**Perimeter:**
$$P = 2((2c + 2x) + (7y - 2x)) = 2(2c + 2x + 7y - 2x) = 2(2c + 7y) = 4c + 14y$$
**Area:**
$$A = (2c + 2x)(7y - 2x)$$
Expanding:
$$= 2c \times 7y - 2c \times 2x + 2x \times 7y - 2x \times 2x = 14cy - 4cx + 14xy - 4x^2$$
6. **Bottom-right rectangle:**
- Length = $2x + y$
- Width = $x + 2$
**Perimeter:**
$$P = 2((2x + y) + (x + 2)) = 2(3x + y + 2) = 6x + 2y + 4$$
**Area:**
$$A = (2x + y)(x + 2)$$
Expanding:
$$= 2x \times x + 2x \times 2 + y \times x + y \times 2 = 2x^2 + 4x + xy + 2y$$
**Summary:**
- Top-left rectangle: Perimeter = $6y - 4$, Area = $2y^2 - 4y$
- Top-right rectangle: Perimeter = $4x + 22$, Area = $14x + 28$
- Bottom-left rectangle: Perimeter = $4c + 14y$, Area = $14cy - 4cx + 14xy - 4x^2$
- Bottom-right rectangle: Perimeter = $6x + 2y + 4$, Area = $2x^2 + 4x + xy + 2y$
This step-by-step explanation shows how to use the perimeter and area formulas, substitute the given lengths and widths, and simplify the expressions clearly and simply.
Rectangle Expressions
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