The LessonA difference of squares is square number (a number multiplied by itself) subtracted from another square number.
A Real Example of a Difference of SquaresIt is easier to understand a difference of squares with an example.
In this example,
- 32 = 3 × 3 = 9 (3 squared).
- 22 = 2 × 2 = 4 (2 squared).
A Difference of Squares in GeneralIn general, we can use symbols instead of numbers:
a and b are both integers (whole numbers).