SOLUTION: Factor: w^2-49z^2 - another factoring question, I have tried and I just don't get the process.

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Question 371371: Factor: w^2-49z^2 - another factoring question, I have tried and I just don't get the process.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

Factor

w^2-49z^2 

(w + ?z)(w - ?z) Note: this is NOT a trinomial(there is NO zw term)

(w + 7z)(w-7z)  The sum of inner(7zw) and outer product(-7zw) is ZERO