Algebra-1

To factorize the expression 16x⁴ - 81y⁴, we can recognize it as a difference of squares.

We know that 16x⁴ can be written as (4x²)² and 81y⁴ can be written as (9y²)².

The expression 16x⁴ - 81y⁴ can be rewritten as (4x²)² - (9y²)².

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

Applying this formula...