Mathematics, 31.10.2020 03:30 kyleee4473

Sarah's class is squaring complex numbers. Sarah says that (3+4i)^2 = (9+16i^2)=(9-16)=-7. Did Sarah square (3+4i) correctly? If not explain her mistake and provide the correct answer.

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Sarah's class is squaring complex numbers. Sarah says that (3+4i)^2 = (9+16i^2)=(9-16)=-7. Did Sarah...