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0213
Could someone walk me through this question and explain to me what happens. I have been working on it for 7 hours. I don't understand my prof and I might fail the class and I want to cry. Its solving a quadratic equation that had complex numbers
:/ Sorry... I can't help..
tried using the quadratic formula yet?
I tried it, i solved it but i got the wrong answers. I tried it over and over again. I looked up videos, still wrong answer
\(\large \begin{array}{llll} {\color{red}{ 2}}x^2&{\color{blue}{ -i}}x&{\color{green}{ -2+i}}=0\\ \uparrow &\ \uparrow &\quad \uparrow \\ {\color{red}{ a}}&\ {\color{blue}{ b}}&\quad {\color{green}{ c}} \end{array}\\ \quad \\ \bf x=\cfrac{i\pm\sqrt{i^2-4(2)(-2+i)}}{2(2)}\implies x=\cfrac{i\pm\sqrt{-1-8(-2+i)}}{2(2)}\\ \quad \\ x=\cfrac{i\pm\sqrt{-1+16-8i}}{2(2)}\implies x=\cfrac{i\pm\sqrt{15-8i}}{4}\)
well.. that's.... as far as I can see it going... what does your answer say?
hmmm I don't see it simplifying ... to that
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that is an algorithm
please explain...never learned that
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wait...is this like synthetic division
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this is the briot-ruffini algorithmm, i don't what is synthetic division
so in my question the root is 2?
no the root is one, the first coef in your polynomial is 2
how do i know what the root is?
one, was a easy root to see in that problem
oh. so if it had all 4...then it will be 2?
could u do it step by step and explain what you were doing at each step
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