To solve this question, we either need the values of x and y or the range of values for/signs on x and y.
The expression '-xy' basically mean that
(The negative of the value of x) × (The value of y)
= (-x) × (y)
So, if for example, the values of x and y are given as 2 and 3 respectively.
-xy = (-2) × (3) = -6
And the sign of -xy would be negative.
For any value of x and y given, this shows how easy it is to obtain -xy.
The other way the question could be given is if the range of values for or the signs on x and y is provided.
For example,
If x is a negative number, that is, x < 0,
and y is a positive number, that is, y > 0,
It is easy to see that -xy which is (-x) × (y) is evaluated thus
-x = -(negative number) = (positive number)
y = (positive number)
-xy = (positive number) × (positive number) = positive number
And the sign on -xy would be positive in this case.
So, whichever way the further information on x and y is provided will determine the solution for this question.
I believe this explanation should help to evaluate or provide solution to the eventual complete question.
Hope this Helps!!!
