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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)
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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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