So the equation is 2x^2 + 7x + 3 = 0, let’s factor this out: 2x^2 + 6x + x + 3 = 0, so 2x(x+3) + 1(x+3) = 0, so (2x+1)(x+3)=0, so x = -1/2 or -3
        
             
        
        
        
There are four major types of probability and they include:
- classical, 
 - empirical, 
 - subjective 
 - axiomatic
 
<h3>What is Probability?</h3>
This refers to the mathematical depictions of the possibility of an event occurring based on given variables.
Please note that your question is incomplete so I gave you a general overview of a probability distribution.
Read more about probability distribution here:
brainly.com/question/24756209