Answer:
-262
Step-by-step explanation:
Evaluate Subtraction & Addition from right to left [or left to right, as long as you know what you are doing]:
38 + 16 - 12 - 2 - 302
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We know that:

Then:

Therefore:

Simplifying the above result we get:

Answer:
(-4)^-3 =
-4^-3 = 
Basically in this situation there is no difference whether parenthesis are used or not.