SOLUTION: can you please help me use the quadratic formula to solve the following and leave irrational roots in the simplest radical form: (((3x^2-4x-5=0)))

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Question 179728This question is from textbook algebra structure and method
: can you please help me use the quadratic formula to solve the following and leave irrational roots in the simplest radical form: (((3x^2-4x-5=0))) This question is from textbook algebra structure and method

Answer by Mathtut(3670)   (Show Source): You can put this solution on YOUR website!

:
so:
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=76 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 2.11963298118022, -0.786299647846891. Here's your graph:
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