Question
(u - 5) 2 + (v + 2) 2 + (w –
4) 2 = 0, then find the value of 4u - v + w.Solution
If (u - 5) 2 + (v + 2) 2 + (w – 4) 2 = 0, then (u = 5), (v = -2), and (w = 4).
So,
- u - 5 = 0 → u = 5
- v + 2 = 0 → v = -2
- w - 4 = 0 → w = 4
Therefore, required value:
4(5) - (-2) + 4 = 20 + 2 + 4 = 26
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