Question

Evaluate: 2x – 16y for x = −2 and y = 3

Answer 1

To evaluate the expression with the given values, we need to substitute them and perform any required calculation.

To do so, we need to remember the following rule:

If we have a multiplication of two numbers with different signals, one of them positive and the other negative, the result will be negative. If the multiplication is made with two numbers with the same signal, both positive or both negative, the result will be positive.

From this, we perform the following calculation:

`\begin{gathered} 2x-16y \\ 2\cdot(-2)-16\cdot(3) \\ -4-48 \\ -52 \end{gathered}`

From the solution developed above, we are able to conclude that the solution is:

- 52