Dude, you guys still don't get it.
You are forbidden from adding paranthasis to the expression, because doing so would change the expression.
-2^2 is perfectly valid and un-ambiguous on its own. Nothing else but -2^2 is the same written expression as -2^2. Modifying the expression changes the expression and invalidates your arguement, because you'd be talking about a whole new expression entirely.
Now presuming that modifying the expression with paranthesis is forbidden, and acknowledging that -2^2 is a valid expression in its own... Know that -2^2 is equal to -4 and nothing else.
No IFs, ANDs or BUTs. Final. It is mathmatical LAW.
