SOLUTION: How do you solve 2a^2 - 5a - 12 = 0 in quadratic form?

Question 300474: How do you solve 2a^2 - 5a - 12 = 0 in quadratic form?
Found 2 solutions by Fombitz, JBarnum:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
You can factor,

Two solutions:

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Graphical verification,

Answer by JBarnum(2146) (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=121 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 4, -1.5. Here's your graph:

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