Factor the following polynomial completely. -x 2 y 2 + x 4 + 4y 2 - 4x 2

Question

Factor the following polynomial completely.  -x 2 y 2 + x 4 + 4y 2 - 4x 2

goformit100 · Answer

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anonymous · Answer

$$-x^2y^2 + x^4 + 4y^2 - 4x^2$$ is what you mean right?

ranga · Answer

What are the common factors of the first two terms?
What are the common factors of the last two terms?