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Mathematics 17 Online
OpenStudy (anonymous):

factor: see below:

OpenStudy (anonymous):

\[9y ^{2}z ^{2}-16x ^{2}\]

OpenStudy (uri):

What's common is 9y^2z^2?

OpenStudy (anonymous):

3

OpenStudy (uri):

3yz

OpenStudy (uri):

How about 16z^2?

OpenStudy (anonymous):

correct

OpenStudy (anonymous):

4z

OpenStudy (anonymous):

3yz-4z

OpenStudy (uri):

So 3yz(3yz)-4z(4z) (3yz-4z)(3yz+4z)

OpenStudy (anonymous):

thumbs up!!!!!!!!! I got the same thing

OpenStudy (uri):

:3 you get a medal then :p

OpenStudy (anonymous):

thank you

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