SOLUTION: solve by using quadratic formula 5.2x^2+5x-3=0 6.5x^2+3x-2=0 7.b^2-4ac is called the _____

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Question 539616: solve by using quadratic formula
5.2x^2+5x-3=0
6.5x^2+3x-2=0
7.b^2-4ac is called the _____
Answer by oberobic(2304)   (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=49 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 0.5, -3. Here's your graph:

.

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=49 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 0.4, -1. Here's your graph:

.
is called the discriminant.
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