Question 862935
{{{matrix(2,1,"",root(24,49))}}}{{{matrix(2,1,"",""="")}}}{{{matrix(2,1,"",x^(1/12) )}}}
<pre>
Raise both sides to the 24th power

{{{matrix(2,1,"",(root(24,49))^24)}}}{{{matrix(2,1,"",""="")}}}{{{matrix(2,1,"",(x^(1/12))^24 )}}}

The left side is just 49 and for the right side we multiply the
exponents {{{1/12}}} by {{{24}}} and get 2:

{{{49}}}{{{""=""}}}{{{x^2}}}

Taking positive square roots

 7 = x

Edwin</pre>