Answer:
(x^2)-4
Step-by-step explanation:
expand using the distributive property of multiplication
Distributive property of multiplication
x = 12
-3x+12=48
-12 -12
*subtract 12 from both sides
-3x = 36
-3x/3 = 36/3
*divide 3 from each sides
-40+44i
4(-10+11i) = -40+44i
hope its clear