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Mathematics 17 Online
OpenStudy (anonymous):

factor 36z^2-1

OpenStudy (anonymous):

Perfect square binomial: (6z+1)(6z-1)

OpenStudy (anonymous):

36z^2=(6z)^2

OpenStudy (anonymous):

So, 36z^2-1=(6z)^2-1^2

OpenStudy (anonymous):

Hint: a^2-b^2=(a+b)(a-b)

OpenStudy (anonymous):

Does it help?

OpenStudy (anonymous):

yes thank you!!

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