Factor the following polynomial completely. -x^2y^2 + x4 + 4y^2 - 4x^2 1.) (x - 2)(x - 2)(x + y)(x - y) 2.) (x + 2)(x + 2)(x + y)(x - y) 3.) (x + 2)(x - 2)(x + y)(x - y)

-x^2y^2 + x4 + 4y^2 - 4x^2

= x^2(x^2 - y^2) -4(x^2 - y^2)

= (x^2 - y^2) (x^2 - 4)

=(x + y)(x -y)(x + 2)(x - 2)

answer

3.) (x + 2)(x - 2)(x + y)(x - y)

= (y^2 - x^2) (

it happens during combustion and impacts the environment because the plants and trees take in that and it can cause them to die.

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step-by-step explanation: