4-1 = 1/4 = 0.25
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When you have a negative exponent on, say, 4, it will be written 4^-2 You basically take the reciprocal of it and change the exponent to a positive one. 4^-2 would be 1/4^2
negative 4 with negative 3 as an exponent
It is (1/3)^(-4) or (1/27)^(-4/3)
Any non-zero fraction is the same as its reciprocal raised to the power of -1.So 3/4 = (4/3)-1 and there you have your negative exponent!
Not always. (-4)-2 = 1/(-4)2 = 1/16 which is positive. (-4)-3 = 1/(-4)3 = 1/(-64) which is negative.