Question 746492
{{{
4^x+4^x-1=10
}}}


{{{
2*4^x=11
}}}


{{{
4^x=11/2
}}}


{{{
log(4^x)=log4(9/2)
}}}


so...
{{{
x*log(4)=log(9/2)
}}}

or


{{{
x=(log(9)-log(2))/log(4)
}}}


:)