Answer:
x = -6
x = 2
Step-by-step explanation:
x² + 4 - 12 = 0
= (x + 6)(x - 2)
x + 6 = 0
x = -6
x - 2 = 0
x = 2
Theres an app called photomath thats useful for these kinds of problems
Answer:

Step-by-step explanation:


















Hence, the correct answer is 
Yes, this is the right answer