k, (meaning the negative is completed after?) Unfortunately there are no tricks
Think of it this way, 5/2 = 5(1/2). a power of 1/2 is equivalent to a square root. You can accomplish the exponent in any order. Again, taking the square root of 25 first then taking 5 to the 5 power (=3125) is easier then taking 25 to the 5 and then taking the square root of it (assuming no calculator). Then multiply by -1. So final answer -3125