0.1 = 1/10 = 10-1
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negative 4 with negative 3 as an exponent
the exponent is a negative
A number to a negative exponent is the inverse of the number to the positive exponent. That is, x-a = 1/xa
Every number can be expressed using an exponent. You select a base, b, which should be a positive real number. Suppose the number is x.If this number is negative, then its exponent form will have a negative sign before it.The absolute value of the number is converted to the exponent form by solving x = b^y where y is the exponent. However, you need to know about logarithms before you can do that (and this question suggests that you have not yet progressed to that level of mathematics).
If you have a negative exponent, then put 1/the number multiplied by itself the number of times of the exponent. For example: 3-2=1/(3x3)=1/9