Answer:

Step-by-step explanation:
<u>Step 1:  Set the second equation into the first
</u>




<u>Step 2:  Solve the second equation
</u>


Answer:  
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:

Identity used:


Now let us divide the modified expressions:
 ÷
 ÷ 
we get:

 
        
             
        
        
        
Let x = 0.25555…
10x=2.555…
9x=2.3
90x=23
x=23/90
        
             
        
        
        
Answer:
(x + 5)^2 = (5 - 3)^2
Step-by-step explanation:
Given the equation;
x^2 + 10x + 22 = 13
We have;
x^2 + 10x = 13 - 22
x^2 + 10x = -9
Adding half of 10 to both sides and completing the square as usual, we have;
(x + 5)^2 = 5^2 + (-9)
(x + 5)^2 = (5 - 3)^2