Answer:
15(x - 5)(x - 3)²
Explanation:
factor both denominators and see what you need to do to make them equal...
(x² - y²)/[(x - 5)(x - 3)] y²/[15(x - 3)(x - 3)]
the first denominator has (x - 5)(x - 3)
the second denominator has 15(x - 3)(x - 3),
the least common denominator between them would be
15(x - 5)(x -3)(x - 3) or 15(x - 5)(x - 3)²