If a2 + b2 + 49c2 + 18 = 2(b - 28c - a) then the value of (a + b - 7c) is:
Question
If a2 + b2 + 49c2 + 18 = 2(b - 28c - a) then the value of (a + b - 7c) is:
Solution
The given equation is a² + b² + 49c² + 18 = 2(b - 28c - a).
We can rearrange this equation to make it easier to solve:
a² + 2a + b² - 2b + 49c² + 56c + 18 = 0.
This equation can be rewritten as:
(a
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