Question

State which of the following expansions is a perfect square: a² - 6ab - 9b²​

Answer 1

Answer:

9b² is the perfect square

Step-by-step explanation:

9b² is the perfect square of 3b

Answer 2

Answer:

a² - 6ab - 9b² is a not perfect square

because a² - 6ab - 9b² can't be written as the whole square form

hope so it helps you mate