Answer:
[tex](a-b)(a+b)[/tex]
Step-by-step explanation:
This particular pattern: [tex]a^2-b^2[/tex]; is the difference of squares pattern.
Difference of Squares Pattern: [tex](a-b)(a+b)=a^2-b^2[/tex]
There are other square of binomial patterns (though the difference of squares pattern isn't really a square of binomial, I learned these three at the same time)
[tex](a+b)^2=a^2+2ab+b^2[/tex]
[tex](a-b)^2=a^2-2ab+b^2[/tex]
