(m+n)6-(m-n)6-12mn(m2-n2)2

2 min read Jun 16, 2024
(m+n)6-(m-n)6-12mn(m2-n2)2

Simplifying the Expression (m+n)⁶ - (m-n)⁶ - 12mn(m²-n²)²

This article aims to simplify the given algebraic expression: (m+n)⁶ - (m-n)⁶ - 12mn(m²-n²)². We will achieve this by leveraging the binomial theorem and factorization techniques.

Applying the Binomial Theorem

Let's begin by expanding the first two terms using the binomial theorem:

  • (m+n)⁶: This can be expanded as: m⁶ + 6m⁵n + 15m⁴n² + 20m³n³ + 15m²n⁴ + 6mn⁵ + n⁶
  • (m-n)⁶: Similarly, this expands to: m⁶ - 6m⁵n + 15m⁴n² - 20m³n³ + 15m²n⁴ - 6mn⁵ + n⁶

Combining and Simplifying

Now, let's subtract the second expanded term from the first:

(m⁶ + 6m⁵n + 15m⁴n² + 20m³n³ + 15m²n⁴ + 6mn⁵ + n⁶) - (m⁶ - 6m⁵n + 15m⁴n² - 20m³n³ + 15m²n⁴ - 6mn⁵ + n⁶)

Notice that most of the terms cancel out, leaving us with:

12m⁵n + 40m³n³ + 12mn⁵

Addressing the Third Term

Let's examine the third term: -12mn(m²-n²)²

We can rewrite this by expanding the squared term:

-12mn(m⁴ - 2m²n² + n⁴)

This simplifies to:

-12m⁵n + 24m³n³ - 12mn⁵

Final Simplification

Finally, let's combine the simplified results from both parts:

(12m⁵n + 40m³n³ + 12mn⁵) + (-12m⁵n + 24m³n³ - 12mn⁵)

The terms with m⁵n and mn⁵ cancel out, leaving us with:

64m³n³

Conclusion

Therefore, the simplified form of the expression (m+n)⁶ - (m-n)⁶ - 12mn(m²-n²)² is 64m³n³. This result highlights the power of algebraic manipulations and the importance of recognizing patterns within expressions.

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