Answer: x=−2(1−√3ı),−2(1+√3ı)
Step-by-step explanation:
1. Let y=0 to find the x-intercept(s).
0=x^2+4x+16
2. Switch sides.
x^2+4x+16=0
3. Use the Quadratic Formula.
x=(−4+4√3ı/2),(−4−4√3ı/2)
4. Simplify solutions.
x=−2(1−√3ı),−2(1+√3ı)
