For the circled question in the attachment, what exactly do I have to do to prove it? Do I let alpha = a + ib?
Please, any help?
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Using the properties from #4 above, notice that:
in every quadratic equation
than where you must see that on the left side is not the same on the right side
and now you have:
you need to find for what where
but you know that that is for:
and now you can see that:
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