SOLUTION: Find the conjugate of 1+ 2i

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Question 134055: Find the conjugate of 1+ 2i
Answer by vleith(2983) About Me  (Show Source):
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What does conjugate mean? A binomial factor which together with the original binomial factor have a product which is the difference of two squares.
Whenever you are given a complex number, the conjugate is given by negating the imaginary term.
Given: +1%2B2i conjugate 1+-+2i