Patrick B. answered 04/28/19
Tutor
4.7
(31)
Math and computer tutor/teacher
Xy>0
So x>0 and y>0 or x<0 and y<0
that is x and y must have the same sign
Patrick B. answered 04/28/19
Math and computer tutor/teacher
Xy>0
So x>0 and y>0 or x<0 and y<0
that is x and y must have the same sign
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