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September 16, 2014

September 16, 2014

Posted by **ROCKY** on Sunday, July 24, 2011 at 1:44am.

-4t^2+64

- algebra -
**MathMate**, Sunday, July 24, 2011 at 8:03am-4t^2+64

Hint:

write it as

-(4t^2-64)

=-((2t)^2-8^2)

and use the difference of two squares

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

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