Question 631808
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
4x^2 - 3x -7 =0
Note:  Quadratic formula ALWAYS works
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
{{{x = (3 +- sqrt( 9 - 4*4*(-7) ))/(8) }}}
{{{x = (3 +- sqrt(121 ))/(8) }}}
{{{x = (3 +- 11)/8 }}}
x = 14/8 = 7/2    or  x = -8/8 = -1