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OpenStudy (anonymous):
Find the product of (3x − 7y)^2. 9x^2 − 42xy + 49y^2 9x^2 + 42xy + 49y^2 9x^2 − 49y^2 9x^2 + 49y^2
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OpenStudy (anonymous):
\[(3x − 7y)^2\] \[(3x − 7y)(3x − 7y)\] FOIL
OpenStudy (anonymous):
I don't understand what foil is, I've never learned it before.
OpenStudy (anonymous):
|dw:1373329483295:dw|
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