2^x+4 = 4^x
If you meant
2^(x+4) = 4^x
which means 
 
 
 Since the bases are positive, equal, and not 1,
the exponts are alse equal:
Since the bases are positive, equal, and not 1,
the exponts are alse equal:
 
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That's probably what you meant.  But when you don't enclose
the exponent inside of parentheses like this
2^(x+4) = 4^x
then what you wrote
-----------------------------
That's probably what you meant.  But when you don't enclose
the exponent inside of parentheses like this
2^(x+4) = 4^x
then what you wrote
 
2^x+4 = 4^x
means this:
 
 
 
 
 
 Then we'd have to use the quadratic formula and 
solve by taking logs and the answer is this complicated
expression:
Then we'd have to use the quadratic formula and 
solve by taking logs and the answer is this complicated
expression:
 When typing mathematical expressions and equations, you must
enclose numerators, denominators and exponents in parentheses
except when they contain only one number or only one letter
Edwin
When typing mathematical expressions and equations, you must
enclose numerators, denominators and exponents in parentheses
except when they contain only one number or only one letter
Edwin