Answer:
B. 3 + 5i
Step-by-step explanation:
-2i + (9 - 3i) - (6 - 10i) =
= - 2i + 9 - 3i - 6 + 10i
= 5i + 3
= 3 + 5i
 
        
                    
             
        
        
        
Answer:
xy = 1
k = 79
Step-by-step explanation:
Question One
The first and third frames look to me to be the same. I'll treat them that way.
y = x^2                        Equate y = x^2 to the result of 2y + 6 = 2x + 6
2y + 6 = 2(x + 3)         Remove the brackets 
2y + 6 = 2x + 6           Subtract 6 from both sides
2y = 2x                       Divide by 2 
y = x
Now solve these two equations. 
so x^2 = x                  
x > 0
1 solution is x = 0 from which y = 0. This won't work. x must be greater than 0. So the other is
x(x) = x                           Divide both sides by x            
x = 1                            
y = x^2                           Put x = 1 into x^2 
y = 1^2                           Solve
y = 1                       
The second solution is
(1,1)
xy = 1*1 
xy = 1
Answer: A 
Question Two
square root(k + 2) - x = 0
Subtract x from both sides
sqrt(k + 2) = x                Square both sides
k + 2 = x^2                    Let x = 9
k + 2 = 9^2                    Square 9
k + 2 = 81
k = 81 - 2
k = 79
 
        
             
        
        
        
There are still 9 candies. The color of them is besides the point.