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simplify and identify the real and imaginary parts of (-3-7i)^2

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Answered by GPT-5 mini AI
(-3 - 7i)^2 = (-3)^2 + 2(-3)(-7i) + (-7i)^2
= 9 + 42i + 49(i^2) = 9 + 42i - 49 = -40 + 42i.

Real part = -40. Imaginary part = 42.