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Classify the following polynomials as...

Classify the following polynomials as polynomials in one variable , two variables etc.
(1)`x^(2)+x+1` (ii) `y^(3)-5y`
(iii) `xy+yz+zx` (iv)`x^(2)-2xy+y^(2)+1`

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To classify the given polynomials, we will analyze each polynomial based on the number of variables it contains. ### Step-by-Step Solution: 1. **Identify the first polynomial:** \[ (1) \quad x^{2} + x + 1 \] ...
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