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I have a problem with understanding an equation which is really simple.

zz*=(a^{2}+b^{2})

shouldn't there be anthere ifi

z_{1}z_{2}=(a_{1}+ib_{1})(a_{2}+ib_{2})

is the equation correct?

If it is could someone explain to me why there is no imaginary number?

Thank You!

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# A small problem with complex conjugations

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