Classify the following polynomial as a polynomial in one variable,two variables,etc.:
$x^{2}-2xy+y^{2}+1$
$x^{2}-2xy+y^{2}+1$
(B) The given expression is $x^{2}-2xy+y^{2}+1$.
In this expression,the variables present are $x$ and $y$.
Since there are two distinct variables,this is a polynomial in two variables.
In this expression,the variables present are $x$ and $y$.
Since there are two distinct variables,this is a polynomial in two variables.
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