(-3, 1)
 4x-9y=-21
+-4x-3y=9
 -12y= -12
 y=1
4x- 9(1)= -21
4x-9=-21
 +9 +9
4x= -12
x=-3
        
             
        
        
        
Answer:
27 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
t=(37+root89)/32,(37-root89)/32
Step-by-step explanation:
Solve the equation:
23=3+37t-16t^2
 
        
             
        
        
        
Answer:
81(x + 2y)(x - 2y)
Step-by-step explanation:
