Question

If $x=-2$, then find the value of each of the following algebraic expressions.

$2x-x^2$

Answer 1

The given expression is $2x-x^2$

Now substitute the value of $x=-2$

$$\begin{gathered} 2\left(-2\right)-2^2 \\ \Rightarrow -4-4 \\ \Rightarrow -8 \end{gathered}$$

Hence the value of the expression is $-8$