(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The question is asking whether or not the given equations are linear. I am unsure whether this equation (below) is linear or not?

x_{1}+ 5x_{2}- sqrt(2x_{3}) = 1

3. The attempt at a solution

My initial answer is that it is not due to the fact that a linear equation does not contain any roots (mentioned in the textbook itself), however, the textbook answers show that the given equation is in fact a linear equation. Why is this possible?

Any help is greatly appreciated

Thanks

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# Homework Help: Is this really a linear equation?

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