Factor the following polynomial completely. -x2y2 + x4 + 9y2 - 9x2
-x^2y^2 + x^4 + 9y^2 - 9x^2 = (x^4 - 9x^2) + (9y^2 - -x^2y^2) = x^2(x^2 - 9) - y^2(x^2 - 9) = (x^2 - y^2)(x^2 - 9) = (x + y)(x - y)(x + 3)(x - 3)
Question
Updated 7/17/2014 3:44:19 PM
Rating
3
-x^2y^2 + x^4 + 9y^2 - 9x^2 = (x^4 - 9x^2) + (9y^2 - -x^2y^2) = x^2(x^2 - 9) - y^2(x^2 - 9) = (x^2 - y^2)(x^2 - 9) = (x + y)(x - y)(x + 3)(x - 3)
Confirmed by andrewpallarca [7/19/2014 9:25:05 AM]

Questions asked by the same visitor
Factor jm + jn + km + kn
Question
Updated 3/31/2017 9:23:49 PM
jm + jn + km + kn = (j + k)(m + n)
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factor 5x2 + 10x - 40
Question
Updated 7/17/2014 3:21:38 PM
5x^2 + 10x - 40 = 5(x^2 + 2x - 8) = 5(x + 4)(x - 2)
Confirmed by yumdrea [7/17/2014 3:41:02 PM]
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