Rewrite (w+7)2 without the parentheses and simplify.
Oops. You're right! Better fix it.
(Also looked it over, it is either w2 + 14w + 49 or 14w3 + 49)
(w+7)2 = (w+7)(w+7)
{Use distributive property}: w(w + 7) + 7(w + 7)
Multiply: (w2 + 7w) + (7w + 49)
Add Common Factors: (7w + 7w = 14w)
Simplify/Answer: w2 + 14w + 49
{nl}(Why does it keep saying this when I edit?)
Your first two lines are correct Obscure, but you go wrong after that (e.g. 7*7 = 49 not 14).
w2 + 14w + 49 is correct.
.
Okay, thanks Alan.
+308 
