Answer:
Domain: (+∞, -∞)
Step-by-step explanation:
Domain = x value
hope it helps
Answer : 
(1) 
Use FOIL method to mulitply (3x – 5)(3x – 5)

(2) 
Use FOIL method to mulitply (3x - 5)(3x + 5)

(3) 
Use FOIL method to mulitply -(3x + 5)(3x + 5)

(4) 
Use FOIL method to mulitply -(3x + 5)(3x - 5)

So equation 2 is true
<span>(3-6i)-(4+2i)-(-7+i)
Answer is = 6-9i</span>