Which of the following are true statements regarding perfect squares? Check all that apply.9 ∙ 9 = 2(9)4 ∙ 4 = 836 is a perfect square.12 is a perfect square.1 is a perfect square.

A perfect square is a number that can be written as an integer multiplied by itself. Since 36 = 6 × 6 and 1 = 1 × 1, choices C and E are true. The other statements are false: 9 × 9 = 81, 4 × 4 = 16, and 12 is not the square of an integer.

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