Combine like terms. 
4x^3 -6x^3= -2x^3
-8x^2 +2x^2= -6x^2
Answer = -2x^3 -6x^2 +4
        
             
        
        
        
Answer: 
Step-by-step explanation:
1/2 + 2/3 + 5/4 = 29/
12
 = 2 5/
12
 ≅ 2.4166667
 
        
             
        
        
        
Answer:
4
Step-by-step explanation:
The general equation of a circle with center (a, b) and radius r is given by the equation;

The constant in the right hand side of the equation is simply the square of the radius;
We have been given the following equation;
 (x-3)^2 + (y+1)^2 = 16
Comparing this with the general equation above;

 
        
             
        
        
        
I do not see the exact value, but this is the formula: 
 
 
        
        
        
Answer:
x=3
Step-by-step explanation:
A vertical line will have the equation in terms of x. Any point you choose on line <em>l </em>will have an x-coordinate of 3.