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Find the greatest and least value of |z(...

Find the greatest and least value of `|z_(1)+z_(2)|=" if " z_(1)=24 + 7i and |z_(2)|=7`

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we have,
`|z_(1)|=|24 +7i|=2 5 and |z_(2)|=7`
`" Greatest" |z_(1)+z_(2)|=|z_(1)|= 25 + 7 = 32`
`" Least " |z_(1) +z_(2)| =||z_(1)|-|z_(2)||= 25-7 = 18`
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