Mathematics, 21.03.2020 20:46 karankhatri1946
If $23=x^4+\frac{1}{x^4}$, then what is the value of $x^2+\frac{1}{x^2}$?
Answers: 1
is given.
.
(We used the identity: 
for expansion).
.
(that is not zero), then we can conclude 
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If $23=x^4+\frac{1}{x^4}$, then what is the value of $x^2+\frac{1}{x^2}$?...
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