solve for 3^x+2 + 3^-x= 10
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Answer is in the attachment...x = 0 or x = -2
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Answered by
8
Given,
To find,
Solving for x
Solution,
⇒
⇒
Since ,
⇒ Let be a.
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
Since a =
Now equate a values ,a =1
Next
Since bases are same equate powers , x = -2.
Hence , the values of x are -2 and 0.
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