Mathematics

Mathematics, 17.07.2019 03:30, Nathaliasmiles

Which of the following expressions is equal to -×^2-81? a. (-x+9i)(x-9i) b.(x+9i)(x-9i) -9i)(x-9i) -9i)(x+9i)

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Which of the following expressions is equal to -×^2-81? a. (-x+9i)(x-9i) b.(x+9i)(x-9i) -9i)(x-9i)...

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