Answer:
x=−2±3i√2
Step-by-step explanation:
Use the formula ( b/2 )^2 in order to create a new term. Solve for x by using this term to complete the square.
 
        
             
        
        
        
Answer:  Y = - 4 & x = 1
Step-by-step explanation:
Systems of linear equations: We will solve this using substitution but you can use 2 more ways. 
7x + 2y = -1
2x - 4y = 19
Leave X  alone first: -------------------
10x - 2y = 18
10x/10 = 18 + 2y/10
x = 9/5 + y/5 
Solve for y:
7(9/5 + y/5) + 2y = -1
63/5 + 7y/5 + 2y - 1
63/5 + 7y/5 = 10y/5 = -1
63/5 + 17y/5 = -1 (-5/5)
17y/5 = -68/5 (cancel the 5)
y = -68/17
y = - 4 (Your Answer)
7x + 2(- 4) = -1
7x + (-8) = -1
7x = 7
x =   1
CHECK=
7(1) + 2(-4) = -1
7+ (-8) = -1.
-1=-1
 
        
                    
             
        
        
        
9514 1404 393
Answer:
   A
Step-by-step explanation:
The function f(x) is required in the numerator, eliminating choices C and D.
The restriction is that function g cannot be zero, so we cannot have ...
   3x +2 = 0
   3x = -2
   x = -2/3 . . . . . eliminates choice B; confirms choice A
 
        
             
        
        
        
Answer:
c
Step-by-step explanation: