SOLUTION: factor this equation using the difference of two squares please. 2(x-2y)^2-18z^2

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Question 1029601: factor this equation using the difference of two squares please.
2(x-2y)^2-18z^2

Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
The first step in any factoring problem is to factor out any greatest common factor first...here we get
2%28x-2y%29%5E2+-+18z%5E2 =
2%28%28x-2y%29%5E2+-+9z%5E2%29 =
Now we look for a sum times a difference...
2%28x+-+2y+%2B+3z%29%28x+-+2y+-+3z%29