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KerryJ

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The complex number z satisfies the equation z+2iz*=12+9i. Find z giving your answer in the form x+iy.
1. 5 answers
2. 3,100 views
Find the modulus and principal argument of the complex numbers giving the argument in radians either as pi or a decimal correct
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2. 1,325 views

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OOOOHHHHHH get it now!! thank you Steve!!
I don't quite understand the second line you didn't expand the brakets

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