Math, asked by abdulmajid1912, 11 months ago

4^x+4^-x=7 solve 8^x+8^-x=?

Answers

Answered by jyotee1978

1

Step-by-step explanation:

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Answered by sayantanbasu8p6pkr2

0

Answer:

y+1/y=7

y^2+1/y^2=(y+1/y)^2 - 2

=7^2 - 2=47

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