Can you identify the terms, variables, and coefficients of the algebraic expression $10x - x^{2}$?     [Page No. 17]

For $10x - x^2$:

Terms: two terms $\rightarrow 10x$ and $-x^2$.

Variable: only one $\rightarrow x$.

Coefficients: the coefficient of $x$ is 10, and the coefficient of $x^2$ is $-1$ (because $-x^2$ means $-1 \times x^2$).