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Math- Algebra II

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Simplify (7-3i)^2.

So would I do this:

(7-3i) (7-3i)

then distribute it .... OR

square everything 49+9i^2

? thanks

  • Math- Algebra II -

    First option is correct.

    It is of the form

    (a-b)^2 = a^2 - 2ab + b^2

  • Math- Algebra II -

    thank you, okay I wasn't' sure

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