Question 274319
use foil method 
{{{(x+10)(3x+2)}}}
FOIL 
first {{{x*3x=3x^2}}}
outer{{{x*2=2x}}}
inner{{{10*3x=30x}}}
last{{{10*2=20}}}
{{{3x^2+2x+30x+20}}}
{{{3x^2+32x+20}}}use quadratic formula to solve
*[invoke quadratic "x", 3, 32, 20]