Question 317068
Factor the following expression completely. 
x^2 - 8x + 16 - 9y^2


(x^2 – 8x + 16) – 9y^2 ------> (x – 4)^2 – (3y)^2 -------> [(x – 4) – 3y][(x – 4) + 3y] -----> (x – 4 - 3y)(x – 4 + 3y)


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