Classifying Numbers and Roots

Front

What is a perfect square?

Back

A perfect square is a number that can be expressed as the square of an integer. For example, 1, 4, 9, 16, and 25 are perfect squares.

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Back

1

Front

What is the square root of a number?

Back

Front

Back

-1

Front

Back

It implies that x can be either 9 or -9, since both values satisfy the equation.

Front

What is the square root of 0?

Back

Front

Back

25

Front

What is the principal square root?

Back

The principal square root of a non-negative number is the non-negative value that, when squared, gives the original number. For example, the principal square root of 25 is 5.

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Back

16

Front

Back

x = 7 or x = -7.