Squares and Square Roots

Front

What is the square of 4?

Back

16

Front

What is the square root of 25?

Back

5

Front

Back

4

Front

Back

A perfect square is an integer that is the square of another integer.

Front

Back

The square of a negative number is positive.

Front

Back

The square root of a perfect square is an integer.

Front

Back

9

Front

Back

Squaring a number and then taking the square root returns the original number.

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Back

4

Front

Back

(a - b)² = a² - 2ab + b².