Question

Evaluate the expression when $x=-2,y=3,andz=\frac{-1}{5}$.

Answer 1

Evaluating the expression

On substituting the value of $x,y$ and $z$ in the given expression $xyz$ we get,

$$\begin{gathered} =xyz \\ =-2·3·\frac{-1}{5} \\ =-6·\frac{-1}{5} \end{gathered}$$

Product of two numbers with different signs is negative.

$=\frac{+6}{5}$

Product of two numbers with the same sign is positive.

Hence the final answer is $\frac{+6}{5}$.