10 is the base. If you get stuck on anymore problems like this you can tell which one is the base by looking where the exponent is in the problem. Hope this helps!!
        
             
        
        
        
8=2x2x2
2^3 as required base 2
        
                    
             
        
        
        
5/8 as a percentage is 62.5 
hope i helped :D
        
                    
             
        
        
        
Answer:
x = -3, 
Step-by-step explanation:
The given quadratic equation is: 
This can be written as: 
To solve a quadratic equation of the form  we use the formula:
 we use the formula:
            
Here, a = 2; b = 3; c = - 9
Therefore, the roots of the equation are:



We get two values of 'x', viz., 
x =  and
 and 

⇒ x = -3, 3/2
Since the factors of the quadratic equation is asked, we write it as:
(x + 3)(x -  ) = 0
) = 0 
because, if (x - a)(x - b) are the factors of a quadratic equation, then 'a' and 'b' are its roots.
Multiply (x + 3) and (x -  to see that this indeed is the given quadratic equation.
 to see that this indeed is the given quadratic equation.