Question 609149
  <pre><font face = "Tohoma Ital" size = 3 color = "indigo"><b> 
Hi
f(x)= 4x^2 +12x +9
f(x)= 4(x+3/2)^2 0
f(x)= 4(x+3/2)^2
      (x+3/2)^2 = 0  x = -3/2
 x = 0, then y = 9
{{{drawing(300,300,   -10,10,-10,10,  grid(1), 
 grid(1),
graph( 300, 300, -10,10,-10,10,0, 4x^2 +12x +9))}}}