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Mathematics 18 Online
OpenStudy (anonymous):

Factor completely 4x2 − 81

OpenStudy (anonymous):

@thatsojessiee

OpenStudy (mathstudent55):

Try the difference for two squares: \(a^2 - b^2 = (a + b)(a - b) \)

OpenStudy (mathstudent55):

Is \(4x^2\) the square of something? Of what?

OpenStudy (mathstudent55):

@thatsojessiee I hope you're available when the poster takes the test on this material and has no clue how to get to the answer.

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