Question 16740
PLEASE SEE THIS EXAMPLE WHICH IS SIMILAR TO YOUR PRESENT
PROBLEM AND SOLVE YOUR PROBLEM BY CHANGING VALUES OF a,b and c.
9x^2+3.2x+7.8=0...using formula for roots of a quadratic equation.ax^2+bx+c=0....
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} we get 
{{{x = (-3.2 +- sqrt( 3.2^2-4*1.9*7.8 ))/(2*1.9) }}} 
{{{x = (-3.2 +- sqrt( 3.2*3.2-4*1.9*7.8 ))/(3.8) }}} 
{{{x = (-3.2 +- sqrt(-49))/(3.8) }}} 
{{{x = (-3.2 +- 7i)/(3.8) }}}
   x = -(1.6/1.9)+(7/3.8)i   OR   -(1.6/1.9)-(7/3.8)i