Question 1063605
{{{ax^2+bx+c=0}}} has the solutions  {{{x=(-b+- sqrt(b^2-4ac))/(2a)}}}.


{{{3x^2 +3x =21}}}

{{{3x^2+3x-21=0}}}

{{{x^2+x-7=0}}}


{{{x=(-1+- sqrt(1^2-4*1*(-7)))/2}}}


{{{x=(-1+- sqrt(1+28))/2}}}


{{{x=(-1+- sqrt(29))/2}}}


{{{system(x=-1/2-sqrt(29)/2,OR,x=-1/2+sqrt(29)/2)}}}