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Mathematics 9 Online
OpenStudy (anonymous):

Whats a middle term that makes 4x^4+( ? ) + 9y^4 a perfect square?

OpenStudy (anonymous):

12xy

OpenStudy (anonymous):

What's another middle term that would make 25a^2b^2- ( ? ) + 4 a perfect square?

OpenStudy (anonymous):

I meant 25a^4b^2- ( ? ) + 4

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