Final answer: $ \boxed{(2x - 3y)(2x + 3y)(4x^2 + 9y^2)} $

Final Answer: $ oxed{(2x - 3y)(2x + 3y)(4x^2 + 9y^2)} $ — Simplified, Factored, and Expanded Form Explained
Unlock the Power of Algebraic Identity: Final Answer & Full Breakdown
When simplifying complex expressions, mastering algebraic identities can dramatically improve clarity and computation efficiency. One powerful expression often encountered is:
$$ oxed{(2x - 3y)(2x + 3y)(4x^2 + 9y^2)} $$
At first glance, this triple product may seem intimidating. But with strategic factoring and recognition of standard forms, we unlock a beautifully clean and efficient result.
Step 1: Recognize and Apply the Difference of Squares
Observe that the first two factors, $ (2x - 3y) $ and $ (2x + 3y) $, form a classic difference of squares:
$$ (a - b)(a + b) = a^2 - b^2 $$
Let $ a = 2x $ and $ b = 3y $. Then:
$$ (2x - 3y)(2x + 3y) = (2x)^2 - (3y)^2 = 4x^2 - 9y^2 $$
Now the expression simplifies elegantly to:
$$ (4x^2 - 9y^2)(4x^2 + 9y^2) $$
Step 2: Apply the Difference of Squares Again
Notice that the remaining expression is again a difference of squares:
$$ (4x^2 - 9y^2)(4x^2 + 9y^2) = (4x^2)^2 - (9y^2)^2 = 16x^4 - 81y^4 $$
This final result — $ 16x^4 - 81y^4 $ — is a simple quartic difference of squares, showcasing how repeated application of fundamental identities leads to simplified algebra.
Why This Matters: Key Takeaways
- Efficiency: Recognizing patterns like difference of squares saves time and reduces error.
- Factoring Power: Mastery of identities transforms complicated expressions into compact forms.
- Mathematical Beauty: The step-by-step decomposition mirrors the logical structure underlying algebraic reasoning.
- Real-World Applications: Such simplifications appear in calculus, optimization, and physics equations involving quadratic forms.
Final Statement & Encoding
The boxed final form — $ oxed{(2x - 3y)(2x + 3y)(4x^2 + 9y^2)} $ — serves as a compact, factored representation that encodes rich structural insight. Fully simplified to $ 16x^4 - 81y^4 $, it exemplifies efficiency in symbolic algebra.
Ready to Simplify More? Use These Tools:
- Identifying patterns: Difference of squares, sum/difference of cubes
- Repeated practice with identities
- Leveraging factoring techniques in algebra
Mastering expressions like $ (2x - 3y)(2x + 3y)(4x^2 + 9y^2) $ builds a foundation for advanced mathematics — and real-world problem solving.
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