Morgan G.

asked • 07/25/16

Determine whether the number is a perfect square: 9

is the number 9 a perfect square?

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Kenneth S. answered • 07/25/16

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To answer this specific question, and to prepare you for a lot of future work involving square roots, it is time for you to MEMORIZE a list of PERFECT SQUARES: 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256... 
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Mark M.

The underlying question is "What makes a number a 'perfect square'?"
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07/25/16

Kenneth S.

For all who care, a perfect square is the square of a nonnegative integer.  I could add 0 and 1 to the start of my list.
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07/25/16

Mark M.

A square number, or sometimes called a "perfect square" (do imperfect ones exist?) is the square of an integer. Integers are defined as the whole numbers and their additive inverses - that's the same as the negatives. 
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07/26/16

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