First you have to put like terms together: bf+af+be+ae Now you factor the first two terms and then the two last terms: f(b+a)+e(b+a) Now you factor even further. By putting what is in parentheses by what is outside the parentheses: (b+a)(f+e) What you got is correct as mine is too. I hope this formula helps for future problems: ax+bx+ac+bc=x(a+b)+c(a+b) =(a+b)(x+c)
