Question 1114876
{{{(x+6)(x+3)=238}}}


The two factors on the left side differ by 3 units.  Might or might not help.

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{{{x^2+9x+18=238}}}

{{{x^2+9x-220=0}}}

{{{x=(-9+- sqrt(81+4*220))/2}}}

{{{x=(-9+- sqrt(961))/2}}}

{{{x=(-9+31)/2}}}

{{{highlight(x=11)}}}