You can put this solution on YOUR website! 16w^2 + 80w + 100 you need factors of the product of the constant term(100) and the leading coefficient term(16) that sum up to the linear term(80) .... those are: 40 and 40
16w^2 + 40w + 40w + 100
(16w^2 + 40w) + (40w + 100)
8w(2w + 5) + 20(2w + 5)
(8w + 20)(2w + 5)
4(2w + 5)(2w + 5)