SOLUTION: calculate the value of the discriminant of x^2 + 2x +1 = 0, and show work.

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Question 135380: calculate the value of the discriminant of x^2 + 2x +1 = 0, and show work.
Found 2 solutions by smatypants422, smarty1994:
Answer by smatypants422(1)   (Show Source): You can put this solution on YOUR website!
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:
Answer by smarty1994(10)   (Show Source): You can put this solution on YOUR website!
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=0 is zero! That means that there is only one solution: .
Expression can be factored:

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