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December 18, 2014

December 18, 2014

Posted by **cal** on Sunday, June 12, 2011 at 3:30pm.

- algebra -
**MathMate**, Sunday, June 12, 2011 at 4:46pmArea = 16y²-49z² = (4y)²-(7z)²

Factorize to get

(4y+7z)(4y-7z).

Can you take it from here?

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