Math Problem Statement
The product of 2 consecutive odd numbers is 2 more than 13. Find the greater number
Solution
Let the two consecutive odd numbers be represented as and , where is the smaller odd number.
The problem states that their product is 2 more than 13, which can be written as:
Simplify the right-hand side:
Now expand the left-hand side:
To form a quadratic equation, subtract 15 from both sides:
Next, factor the quadratic equation:
Setting each factor equal to zero gives:
Solving these:
Since we are looking for the greater number, we choose . Thus, the two consecutive odd numbers are and , and the greater number is:
Would you like more details on this problem, or have any further questions? Here are five related questions to explore:
- What is the product of two consecutive even numbers and how does it relate to the sum of 13?
- How can you solve a similar problem involving three consecutive odd numbers?
- What are some other methods for factoring quadratic equations besides trial and error?
- How do you solve quadratic equations using the quadratic formula?
- How do you determine the roots of a quadratic equation when factoring isn't possible?
Tip: Always check your solutions by substituting them back into the original equation to verify they satisfy the problem.
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Math Problem Analysis
Mathematical Concepts
Algebra
Quadratic Equations
Factoring
Formulas
x(x + 2) = 15
Factoring Quadratic Equations
Theorems
Zero Product Property
Factoring of Quadratic Equations
Suitable Grade Level
Grades 7-9
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