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    Name:  IMG_20160605_040507.jpg
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Size:  263.1 KB any wrong steps? Also if i am going to remove the modulus sign would i require to square real and imaginary parts inside? I attached the question for this working below...and relating to that it seems z is the same thing as w according to my working which means what i did here must be wrong.
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    (Original post by chhhhelsie)
    Name:  IMG_20160605_040507.jpg
Views: 33
Size:  263.1 KB any wrong steps? Also if i am going to remove the modulus sign would i require to square real and imaginary parts inside? I attached the question for this working below...and relating to that it seems z is the same thing as w according to my working which means what i did here must be wrong.
    No, you know that |z-4| = 4 which has nothing to do with |z| = 4 which is what you've claimed.

    (also, once you've fixed that: |u+iv| = \sqrt{u^2 + v^2})
 
 
 
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