when either someone gives you a quick shy glance or a long stare its pretty obvious they fancy you. When your speaking and it looks like their staring through you, they also fancy you (and girls, if you see the head drop low, that's good! : p) when there paying attention, they fancy you, but anything else that's not obvious they do, they don't fancy you.
algebraic expressions
Equivalent expressions.
None of "these" expressions represent anything!
Yes, numerical expressions can have the same value. For example, the expressions 2+3 and 5 both have the value of 5. Similarly, the expressions 2x3 and 6 both have the value of 6. In general, any two numerical expressions that evaluate to the same number will have the same value.
They are callled: Identical equations or Identities See: http://www.tutorvista.com/search/value-algebraic-expressions
Yes, some expressions can be identical in value.
There are a few steps to rewriting expressions. The steps of rewriting expressions are finding the value of the letter and then using the common factor.
unequal
They are identities.
equivalent
Not necessarily.
No, expressions cannot have the same value in algebra. They may be assigned to different values and on solving we can get different answers in each case.