Step-by-step explanation:
X^2 +4X +4=12 subtract the 12 from both sides
X^2 +4x-8= 0
now factor if possible since this equation is not factorable you can use the quadratic formula
<span>The graph is discontinuous for:
x=-3, -1, 1, 3, ...
Answer: Second option {...-3, -1, 1, 3, ...}</span>