Question

find the value of {(2)^-2+(3)^-2+(4)^-2}10​

Answer 1

Historians who write history emphasize the value of primary sources, that is those sources actually dating from a particular time period, while understanding the limitations of such sources. ... footnotes and a bibliography is how historians demonstrate their methodology and support their conclusions.

Answer 2

the value is {(2)^-2+(3)^-2+(4)^-2}10 is

4.24

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