Write down the numerical coefficient of the following algebraic expression-
$2 a^{2} - 4 a b + 5 b^{2}$

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Solution

The number or constant which appears in a term is called the numerical coefficient of the term.
The given algebraic expression is $2 a^{2} - 4 a b + 5 b^{2}$
The numerical coefficient of the expression
Term of the Expression Numerical Coefficient
$2 a^{2}$ $2$
$- 4 a b$ $- 4$
$5 b^{2}$ $5$

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