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September 21, 2014

September 21, 2014

Posted by **ROCKY** on Tuesday, July 26, 2011 at 11:25pm.

9y^2-16z^2

- intermediate algebra -
**drwls**, Wednesday, July 27, 2011 at 5:55amIt is the difference of two squares.

Use the standard rule

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

The answer is

(3y -4z)(3y + 4z)

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