how do i solve (x+2i)^3=2
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Ok so we have Take the cubed root of both sides Now subtract 2i from the left and the right
Originally Posted by SnipedYou Ok so we have Take the cubed root of both sides Now subtract 2i from the left and the right What about the other solutions? , then all the solutions are: where is primitive root of unity. That means, for .
I'm searching for them, but I saw that one right when I started trying to solve it. I'm stuck here Could I use synthetic division somehow to simplify that knowing that is a factor? Or is there another way to factor it?
Originally Posted by SnipedYou I'm searching for them, but I saw that one right when I started trying to solve it. I'm stuck here Could I use synthetic division somehow to simplify that knowing that is a factor? Or is there another way to factor it? No! Do not fact. The equation, So, So, So, So in the equation, where . Now use the result above.
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