How do you know a number is a perfect square?(1 point)

Question

Responses

Make sure you can multiply two whole numbers to get the perfect square.
Make sure you can multiply two whole numbers to get the perfect square.

The number is even.
The number is even.

Take the square root, and you get a decimal close to a whole number.
Take the square root, and you get a decimal close to a whole number.

Take the square root, and you get a whole number answer.

Answer 1

The correct response is:

Take the square root, and you get a whole number answer.

This is the defining property of a perfect square: it is a number that can be expressed as the square of an integer.