Algebra-1

To factorize the expression 49a²b² - 81c⁴d⁴, we can recognize it as a difference of squares.

We know that 49a²b² can be written as (7ab)² and 81c⁴d⁴ can be written as (9c²d²)².

The expression 49a²b² - 81c⁴d⁴ can be rewritten as (7ab)² - (9c²d²)².

Now we can use the difference of squares formula, which states that a² - b² = (a + b)(a - b).

Applying this formula, we have:(7ab)² - (

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