Question 906290
(x + 4)(x − 1)(x − 9) ≤ 0
(-∞, -4] U [1,9]
{{{drawing(300,300,   -10,10,-100,100,   
 grid(1),
graph( 300, 300, -10,10,-100,100,0,(x + 4)(x - 1)(x - 9) ))}}}