Your question doesn't make sense.
Someone may answer but they will be guessing what you mean.
This is a complex topic.
Perhaps you can give an example.
49^x= 7^(2x)
So the question becomes
2x=x^2-15
X^2 -2x -15 = 0
(X-5)(x+3)=0
X=5 or -3
By sqrt3
Do you mean cubed root?
5/8/8
Or
(5/8)/8
You needed to divide :)
This has an infinite number of solutios. It is the equation of a hyperbola.
Maybe one of the equal signs on the second line is meant to be a + or a - ?
2nd acos number
+118724 
