5x-4 = 5 ÷ x4 or it can be written as 5/x4.
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Five to the negative 4th power = 5-4 = 625
The Answer is 656
It's 0.0028 or 2.8 x 10 -3
Five halves to the negative 2nd power is 0.16
Negative five is at five units to the left of the origin while one fourth is a quarter of a unit to the right.