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Mathematics 20 Online
OpenStudy (anonymous):

Factor the following polynomial completely. -x2y2 + x4 + 9y2 - 9x2 a.(x - 3)(x - 3)(x + y)(x - y) b.(x + 3)(x + 3)(x + y)(x - y) c.(x + 3)(x - 3)(x + y)(x - y)

OpenStudy (pfenn1):

Wow, I would be tempted to multiple out each of the possible solutions to see which one reproduces the original polynomial.

OpenStudy (anonymous):

c.

OpenStudy (pfenn1):

yep

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