Difference of Squares

Reference > Algebra: Sums And Differences Of Squares And Cubes

Description

The Difference of Squares Rule states that:

\({a}^{2}-{b}^{2}=(a+b)(a-b)\)
Examples
\[{x}^{2}-4\]
1
Rewrite it in the form \({a}^{2}-{b}^{2}\), where \(a=x\) and \(b=2\)
\[{x}^{2}-{2}^{2}\]

2
Use Difference of Squares: \({a}^{2}-{b}^{2}=(a+b)(a-b)\)
\[(x+2)(x-2)\]

Done