Answer:
The product of their ages in terms of the son's age, y, is 5y^2.
Step-by-step explanation:
This means that if we square the son's age and then multiply the result by 5, we get the product of their ages. For example, if the son is 3 years old (y = 3), then the product of their ages would be 5 * 3^2 = 45.