Answer:
see the explanation
Step-by-step explanation:
<u><em>The complete question is</em></u>
The first three steps of completing the square to solve the quadratic equation x2 +4x -6= 0, are shown below. 
Step 1: x2 +4x= 6 
Step 2: x2 +4x+4=6+4 
Step 3: (x +2)^2=10 
What are the next 3 steps?
we have
step 4
Take square root both sides

step 5
Simplify

step 6
Solve for x
subtract 2 both sides



 
        
             
        
        
        
Answer:
FOIL
Step-by-step explanation:
First
Outside
Inside
Last
If you dont fully understand look at the attachment
 
        
             
        
        
        
It’s either b or d. Hope this helps! :)
        
             
        
        
        
Answer:
The vertex is (-3, 7)
Step-by-step explanation:
As the equation is already in 'rectangular form), to work out the vertex, we can just compare this equation to that of the standard parabola y = x^2, and in particular, consider how it has been translated:
the (x+3) part moves the graph the the left 3 (i.e in the negative direction), while the +7 moves the graph up 7. 
So as the vertex of the simple parabola y = x^2 is (0,0), the vertex of this graph is just (-3,7). 
Note that the -2 at the front doesn't impact this vertex - this -2 just changes the 'scale' of the parabola (i.e makes it more narrow, and also turns it upside down as it's a negative number).