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October 20, 2014

October 20, 2014

Posted by **key** on Thursday, January 1, 2009 at 3:11pm.

y=81x^2-16

- math -
**bobpursley**, Thursday, January 1, 2009 at 4:24pmy=(9x-4)(9x+4)

Now when is y equal to zero?

- math -
**key**, Thursday, January 1, 2009 at 5:53pmis it -16

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