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-n Before solution of (-1)
Let us see the solution of -1 base to power 2 and 3.
We know that 2 (-1) = 1 And 3 (-1) = -1
therefore -1 to any EVEN power is 1 and -1 to any ODD power is -1. By putting this rule to all integers. We get ...
_ n | (-x) = x if n is EVEN | n > (-x) = -x if n is ODD | _|
Final answer will be x when n is EVEN and -x when n is ODD.
1/3 -2/3 2n - 2n -------------- = ? -2/3 2n
_____________________ / _____________ / / ____ / / / 2 / 4 / 4 . / 4 / \/ \/ / -------------------- / 3 \/ 2