Trivial Question Involving Factorization (again)

[ManyNames]

Trivial Question Involving Factorization (again) :)

Homework Statement

Factorize (E+M)(E+M) - as in E for energy and M for Mass

Homework Equations

... n/a

The Attempt at a Solution

E^2+2ME+M^2

Thanks...

 

[ManyNames]

I know how to factorize with ordinary concordance (x^2+3x+2) which simply would be (x+2)(x+1) which is normal. However, its weird doing this with these variables, or constants, depending.