Which of the following expressions are polynomials in one variable and which are not $?$ State reason for your answer. If the given expression is a polynomial, state whether it is a polynomial in one variable or not
$x^{2}-8 x+15$
Which of the following expressions are polynomials in one variable and which are not $?$ State reason for your answer. If the given expression is a polynomial, state whether it is a polynomial in one variable or not
$x^{2}-8 x+15$
Given expression $x^{2}-8 x+15$ is a polynomial because the exponent of variable $x$ in each of its terms is an integer, viz., $2 , 1$ and $0$ respectively. The given polynomial is a polynomial, in one variable $x$.
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