Question and answer
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)
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Asked 6/18/2013 12:13:56 PM
Updated 7/17/2014 3:44:19 PM
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-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)
Added 7/17/2014 3:44:19 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [7/19/2014 9:25:05 AM]
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Factor jm + jn + km + kn
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Expert Answered
Updated 3/31/2017 9:23:49 PM
1 Answer/Comment
jm + jn + km + kn = (j + k)(m + n)
Added 3/31/2017 9:23:49 PM
This answer has been confirmed as correct and helpful.
Confirmed by Andrew. [3/31/2017 10:36:01 PM]
factor 5x2 + 10x - 40
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Expert Answered
Updated 7/17/2014 3:21:38 PM
1 Answer/Comment
5x^2 + 10x - 40 = 5(x^2 + 2x - 8) = 5(x + 4)(x - 2)
Added 7/17/2014 3:21:35 PM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [7/17/2014 3:41:02 PM]
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