(1/x) + (1/y) + (1/z) is a minimum value when x=y=z=10.
Symmetry gives either maximum or minimum value.
15
A positive plus a minus can result in either a positive, negative, or zero value, depending on the magnitudes of the numbers involved. If the positive number is larger than the absolute value of the negative number, the result will be positive. Conversely, if the negative number's absolute value is larger, the result will be negative. If they are equal in magnitude, the result will be zero.
Yes.
Another positive number.
positive 10
15
A positive answer.
Yes, a positive plus a positive and a positive times a positive both equal a positive.
If, and only if the positive value is > the negative value.
Yes.
Positive 8
Another positive number.
A positive plus a positive will equal a positive. However a negative minus a negative will not equal a negative. It will equal a positive.
No it equals negative. (-)+(+)=(-)
No, it equals a positive. (+)+(+)=(+)
positive 10
Blood type A positive plus A negative equals blood type A positive.