Question 817269
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
x3 + 3x2 = 4 
x^3 + 3x^2 - 4 = 0
  x = 1
(Tossing out the negative solutions x= -2  for unit measure)
{{{drawing(300,300,   -6, 6, -6, 6, grid(1), 
circle(1, 0,0.3),
circle(-2, 0,0.3),
graph( 300, 300, -6, 6, -6,6,0,x^3 + 3x^2 - 4))}}}