Question 628588
{{{(5x+6)^2=9}}}
{{{sqrt((5x+6)^2)=sqrt(9)}}}
{{{sqrt((5x+6)(5x+6))=sqrt((3)(3))}}}
{{{5x+6=3}}}
{{{5x=3-6}}}
{{{5x=-3}}}
{{{5x/5=-3/5}}}
{{{x=-3/5}}}


Check
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{{{(5x+6)^2=9}}}
Put {{{x=-3/5}}}
{{{(5(-3/5)+6)^2=9}}}
{{{(cross(5)(-3/cross(5))+6)^2=9}}}
{{{(-3+6)^2=9}}}
{{{(3)^2=9}}}
{{{9=9}}}