Math Problem Statement
The length of a rectangle is (4x + 9) and the width is (5x - 7). What is the area of the rectangle?
Solution
To find the area of the rectangle, given its length and width, we use the formula for the area of a rectangle:
Given:
- Length,
- Width,
Step 1: Multiply and
Step 2: Use the distributive property (FOIL method) to expand this expression
Step 3: Simplify each term
Step 4: Combine like terms
Final Answer:
The area of the rectangle is:
This corresponds to the option on the orange tile.
Would you like further details, or have any questions?
Here are five related questions:
- How do we determine which terms to combine in the expansion?
- What is the significance of using the distributive property in polynomial multiplication?
- How do we verify the final area expression through substitution?
- How would the result change if either the length or width expression was different?
- How do we interpret negative terms in the context of area?
Tip: When expanding binomials, carefully handle each term, especially with signs, to avoid calculation errors.
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Math Problem Analysis
Mathematical Concepts
Algebra
Polynomials
Area Calculation
Formulas
Area of a rectangle: A = Length × Width
Theorems
Distributive Property (FOIL method for binomials)
Suitable Grade Level
Grades 8-10