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OpenStudy (anonymous):
what is the product of (ab+3)(ab-3)
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OpenStudy (anonymous):
difference of squares
OpenStudy (anonymous):
\[\huge (ab+3)(ab-3) = (ab)^2-3ab+3ab-9\]
OpenStudy (anonymous):
combine like terms
OpenStudy (anonymous):
a^2b^2-6ab-9?
OpenStudy (anonymous):
what is \[\huge -3ab+3ab?\]
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OpenStudy (anonymous):
0?
OpenStudy (anonymous):
so is it a^2b^2-9?
OpenStudy (anonymous):
yeah
OpenStudy (anonymous):
woo! thank you so much
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