Question 343508
NEED TO KNOW: 
TYPE OF EQUATION NEEDED TO USE THE QUADRATIC FORMULA TO SOLVE THE PROBLEM
{{{ax^(2)+bx+c =0}}}

x(x+7)-2=28 
DISTRIBUTE AND SIMPIFY 
{{{X^(2)+7X-2 =28}}}
{{{X^(2)+7X-30 =0}}}

*[invoke quadratic "x", 1, 7, -30]