SOLUTION: Hey, I have a math test tomorrow and I honestly don't understand anything about Quadratic Equations. Could you explain how to do the following question to get me started? 2x(squ

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Question 872879: Hey, I have a math test tomorrow and I honestly don't understand anything about Quadratic Equations. Could you explain how to do the following question to get me started?
2x(squared) + 3x + 1 = 0
Found 2 solutions by Alan3354, psbhowmick:
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
2x^2 + 3x + 1 = 0
Can be factored:
(2x + 1)*(x + 1) = 0
2x+1 = 0
x = -1/2
------------
x + 1 = 0
x = -1
===================
This always works:
Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc)
Quadratic equation (in our case ) has the following solutons:



For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=1 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: -0.5, -1. Here's your graph:
Answer by psbhowmick(878)   (Show Source): You can put this solution on YOUR website!




Either or

If you need any further help on this, feel free to contact me.
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