Math Problem Statement
Prove that the product of two integers, one of the form 3 π 1 + 2 and the other of the form 3 π 2 + 2 , where π 1 and π 2 are integers, is of the form 3 π 3 + 1 for some integer π 3 .
Solution
To prove that the product of two integers, one of the form and the other of the form , where and are integers, is of the form for some integer , we can proceed as follows:
Let:
We want to show that: is of the form for some integer .
First, compute the product :
Expanding this product using the distributive property:
Simplify each term:
Next, factor out the common factor of 3 from the first three terms:
Now, let . Notice that is an integer since and are integers.
Thus, we can write:
We need to show that is of the form . To do this, we recognize that 4 can be written as:
Therefore:
Combine like terms:
Let . Notice that is also an integer since is an integer. Hence, we have:
Thus, the product is indeed of the form for some integer .
This completes the proof.
Would you like more details or have any questions?
Here are some related questions for further exploration:
- What is the product of and ?
- How do the properties of modular arithmetic apply to this problem?
- Can you prove similar results for numbers of the form ?
- How does this result relate to polynomial congruences?
- What other properties of numbers of the form can be derived?
- How does the distributive property facilitate this proof?
- Can you prove the result using induction?
- How does this relate to quadratic residues in number theory?
Tip: When proving statements involving integers, consider using properties of modular arithmetic to simplify and solve the problem efficiently.
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Math Problem Analysis
Mathematical Concepts
Number Theory
Modular Arithmetic
Formulas
Distributive Property
Theorems
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Suitable Grade Level
Advanced High School