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If x=(2^-2-2^-3) ,y=(2^-3-2^-4) and z=(2...

If `x=(2^-2-2^-3)` ,`y=(2^-3-2^-4)` and `z=(2^-4-2^-2)` , then the value of `x^3+y^3+z^3=`
a)0
b)1
c)`-9/2048`
d)`-9/1024`

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