Coefficient of ' $b^{2}$ ' in the expression $9 b - 2 b^{2}$ is ___.

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-2

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None of the above

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Solution

The correct option is C -2
The numerical part of a term (along with its sign) is called the coefficient of a term.
Hence, the coefficient of ' $b^{2}$ ' in the expression $9 b - 2 b^{2}$ is $- 2$ .

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