COMPLEX NUMBERS --- z = (9 - 7i) Find the product of z and its complex conjugate --- Huh?!
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Originally Posted by RedSpades COMPLEX NUMBERS --- z = (9 - 7i) Find the product of z and its complex conjugate --- Huh?! This is a rule Product of, $\displaystyle a+bi$ With conjugate, $\displaystyle a-bi$ Is, (by just expanding) $\displaystyle a^2+b^2$ Thus, $\displaystyle 9^2+7^2$
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