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Exercise 1.2 (Solutions): 3 Hits, Last modified: 3 months ago; tion** Let $z,w,$ and $v$ be complex numbers. Then the following properties hold. - Commutative Law... -z\right) =0 \\ \mbox{In fact if } z=a+bi, \mbox{ then } -z=-a-bi. \end{array}\nonumber\] - Associative ... **Solutions** Suppose $z=\left( -4,7 \right)$, then multiplicative inverse of $z$ $=z^{-1} =\dfrac{1