Question 281519
{{{2x+x^2=143}}} this is a quadratic equation , set it equal to 0
{{{x^2+2x-143=0}}} a=1 b=2 c=-143
{{{-b+((sqrt(b^2-4ac))/2a)}}}{{{-b-((sqrt(b^2-4ac))/2a)}}}
{{{-2+((sqrt(2^2-4*1*-143))/(2*1))}}} {{{-2-((sqrt(2^2-4*1*-143))/(2*1))}}}
{{{-2+((sqrt(4+572))/2)}}} {{{-2-((sqrt(4+572))/2)}}}
{{{-2+((sqrt(576))/2)}}} {{{-2-((sqrt(576))/2)}}}
{{{-2+(24/2)}}} {{{-2-(24/2)}}}
{{{-2+(12)}}} {{{-2-(12)}}}
x={{{highlight(10)}}}, {{{highlight(-14)}}}