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Trigonometry 20 Online
OpenStudy (anonymous):

81x^4 - 16

OpenStudy (zpupster):

this is a diiffrence of 2 squares can you see the squares??

OpenStudy (anonymous):

yeah i made a mistake when i was factoring it out, thanks though.

OpenStudy (zpupster):

sqrt 81 =? sqrt x4= ? sqrt 16 =??

OpenStudy (zpupster):

ok good job!

OpenStudy (anonymous):

thanks

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