Oh, what a happy little question! When we have a number raised to a negative power, we can simply move it to the denominator to make it positive. So, 3 to the power of negative 5 is 1 over 3 to the power of 5, which equals 1 over 243. Just a little math magic to brighten your day!
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(-5)^3 = -125 (-5)*(-5)= 25*(-5)= -125
3^-5=(1/3^5)=1/243
9-5 is 1.6935087808430286711036596724754e-5
Seven to the negative 5th power is 0.00005949901
1/5 When you have any number to the negative power, it becomes a fraction: 5^-1 = 1/5 5^-2 = 2/5 5^-3 = 3/5 5^-4 = 4/5 5^-5 = 5/5 5^-6 = 6/5 5^-7 = 7/5 5^-8 = 8/5