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If z(1)=(2,-1),z(2)=(6,3) find z(1)-z(2)...

If `z_(1)=(2,-1),z_(2)=(6,3)` find `z_(1)-z_(2)`

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`:. z_(1)=(2,-1),z_(2)=(6,3)` `z_(1)-z_(2)=(2-6,-1-3)=(-4,-4)`
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