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OpenStudy (anonymous):
Factor the following polynomial completely. -x2y2 + x4 + 9y2 - 9x2
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OpenStudy (anonymous):
it is (9-x^2) (y^2 - x^2)
OpenStudy (anonymous):
those factor further to (3-x)(3+x)(y-x)(y+x)
OpenStudy (anonymous):
tks for correcting my answer.....
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