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Q: how to factor the expression: 81x² - 72xy + 16y²
A: 81x² - 72xy + 16y² = (9x - 4y)^2
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Asked 6/17/2012 9:35:05 PM
Updated 1/4/2015 12:50:18 AM
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81x² - 72xy + 16y² = (9x - 4y)^2
Added 1/4/2015 12:50:18 AM
This answer has been confirmed as correct and helpful.
Confirmed by sujaysen [1/4/2015 2:27:28 PM]
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