Answer:r
enor
Step-bay-step explanation:
 
        
                    
             
        
        
        
 Answer:
D
Step-by-step explanation:
4 x^ + 36=0
4x( x + 9) =0 provd
 
        
             
        
        
        
X+1 because it’s just the sun of x and 1
        
                    
             
        
        
        
Answer:
x=18
Step-by-step explanation:
<u>Key skills needed: Arithmetic Sequences, Addition</u>
1) We have a sequence of 8,13,x
2) To find the number being added every time, we do 13-8. This is 5. 
3) This means x would be 13+5
4) 13+5 is 18 so x is 18. 
<em>Hope you understood and have a nice day!! :D</em>
 
        
             
        
        
        
The answer is D, because the others can be solved. A when factored is equal to -3, when B is factored it is equal to 3,-1, when C is factored it is 1,-4. D can be solved but you will only get irrational numbers which can't be used.