SOLUTION: Factor the following polynomial completely.
-x^2y^2 + x^4 + 4y^2 - 4x^2
.
(:
Algebra.Com
Question 614848: Factor the following polynomial completely.
-x^2y^2 + x^4 + 4y^2 - 4x^2
.
(:
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
grouping ___ (-x^2y^2 + 4 y^2) + (x^4 - 4x^2)
factoring ___ -y^2(x^2 - 4) + x^2(x^2 - 4)
rearranging ___ (x^2 - y^2)(x^2 - 4)
factoring (again) ___ (x + y)(x - y)(x + 2)(x - 2) ___ difference of squares, twice
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