Answer:
0
Step-by-step explanation:
 5a-3=5a-3
or, 5a-5a=-3+3
or, 0=0 answer
 
        
             
        
        
        
Answer:
the 2nd one
Step-by-step explanation:
 
        
                    
             
        
        
        
Except there are values you want to substitute into the expression, this is what your answer looks like:
 
 
        
        
        
Answer:
x = ± 2i
Step-by-step explanation:
The equation has no real roots, gut has complex roots
Given
x² = - 4 ( take the square root of both sides )
x = ± 
   = ± 
[ Note that  = i ]
 = i ]
   = ±  ×
 ×  = ± 2i
 = ± 2i
 
        
             
        
        
        
Answer:
the answer is d
Step-by-step explanation: