Question 161157
{{{2^x+8(2^x)=9}}}
Let {{{u=2^x}}}
{{{u+8u=9}}}
{{{9u=9}}}
{{{u=1}}}
{{{2^x=1}}}
{{{x=log(2,1)}}}
{{{highlight(x=0)}}}
Check your answer.
{{{2^0+8(2^0)=9}}}
{{{1+8(1)=9}}}
{{{9=9}}}
Ture statement.
Good answer.