Step-by-step explanation:The expression 4x² - 16xm² can be factored by finding the greatest common factor (GCF) of the terms. - GCF: The GCF of 4x² and 16xm² is 4x.- Factoring: - Divide each term by the GCF: - 4x² / 4x = x- 16xm² / 4x = 4m²- Result: - The factored expression is 4x(x - 4m²)