Answer:
20
Step-by-step explanation:
 the LCM of 2, 4, and 5?
2

 
        
             
        
        
        
Answer:
x = 0, -4 and -3.
Step-by-step explanation:
The given expression is "3x to the power of 3 + 21x squared + 36x = 0".
We can write this expression as follows :

Taking 3x common.

x = 3

Hence, the solution of the given quadratic equation are x = 0, -4 and -3.
 
        
             
        
        
        
Answer:  or
 or 
Step-by-step explanation:
 To solve this problem you must:
 - Convert the mixed numbers to fractions, as following:
 
 
 - Multiply both fractions. Mutilply the numerators and the denominators:
 
 - Simplify. Therefore, you obtain that the answer is:
  or
 or 