Question 611543
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi, 
4x^2+25=-20x 
4x^2+20x + 25=0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
{{{x = (-20 +- sqrt( 400-400) )/(8) }}} 
 {{{sqrt( 400-400)= 0}}}
   x = -20/8 = -5/2, one real root, (-5/2,0) is the x-intercept
{{{drawing(300,300,   -6, 6, -6, 6,   grid(1),
circle(-2.5, 0,0.3),
graph( 300, 300, -6, 6, -6, 6,0,4x^2+20x + 25 ))}}}