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Mathematics 19 Online
OpenStudy (anonymous):

Factor 4x^2 - 64y^2

OpenStudy (saifoo.khan):

4 (x-4 y) (x+4 y)

myininaya (myininaya):

do you remember \[(a-b)(a+b)=a^2-b^2\]

OpenStudy (anonymous):

(2x)^2-(8y)^2 (2x+8y)(2x-8y)

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