Question 280143
{{{3x^2-4x+1}}}
{{{-x^2+x-9}}} just add like u would 33 and 12 up and down 3+2 and 3+1=45 add like terms

theres 
{{{3x^2-x^2=2x^2}}}
{{{-4x+x=-3x}}}
{{{1-9=-8}}}
so
={{{2x^2-3x-8}}}