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