First, you are going to distribute the 3 into the (6x+2x) and the 8 into the (5x+6). After that, the parenthesis should be gone. Then, move all the x values to one side, and the constants to the other. Then, solve as you normally would.
 
        
             
        
        
        
The answer is 8a + 12 
here's my work
4(2a + 3) 
4 times 2a is 8a 
then 4 times 3 is 12 
        
                    
             
        
        
        
Answer:
-  -3
 -  

 


Step-by-step explanation:
 
        
             
        
        
        
1+tan^2(A) = sec^2(A) [Pythagorean Identities]
tan^2(A)cot(A) = tan(A)[tan(A)cot(A)] = tan(A)[1] = tan(A)
*see photo for complete solution*