Question 282318
{{{x^2+9x=12}}}
{{{x^2+9x+20.25=12+20.25}}}
{{{x^2+9x+20.25=32.25}}}
{{{(x+4.5)^2=32.25}}}
{{{x+4.5=sqrt(32.25)}}}
{{{x=sqrt(32.25)-4.5}}}
{{{x=1.79}}}