Question 660030
{{{36k^2 = 49 }}}
{{{36k^2 - 49=0 }}}
{{{6^2k^2 -7^2=0 }}}
{{{(6k-7)(6k+7)=0}}}
{{{6k-7=0}}} or {{{6k+7=0}}}
{{{k=7/6}}} or {{{k=-7/6}}}