SOLUTION: What is a sign of D mena and discriminant mean and how does an example of an equation look?

Algebra.Com
Question 203986: What is a sign of D mena and discriminant mean and how does an example of an equation look?
Answer by vleith(2983)   (Show Source): You can put this solution on YOUR website!
Read this. The discriminant is noted as d in the discussion below
Solved by pluggable solver: SOLVE quadratic equation with variable
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=9 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 2, -1. Here's your graph:


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