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OpenStudy (anonymous):
(3x-4y-5z)(4x+4y+5z)
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OpenStudy (anonymous):
(3x-4y-5z)(4x+4y+5z) 3x(4x+4y+5z) -4y(4x+4y+5z) -5z(4x+4y+5z) does that help?
OpenStudy (anonymous):
yep
OpenStudy (anonymous):
nice
OpenStudy (anonymous):
so its 12x^2-4xy-5xz-16y^2-40yz-25z^2
OpenStudy (anonymous):
yes
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