Question

What is the sign of -xy?

Answer 1

Thee andser is positive!

Answer 2

Positive

Explanation:

Since x > 0 = x is positive

Since y < 0 = y is negative

Product of positive and negative number is negative.

Therefore,

xy = - xy

- (xy) = -( -xy)

- (xy) = xy [since product of negative and negative is positive]