SOLUTION: what is the answer to this problem: 4x^2 – 2x – 5 = 0

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Question 456391: what is the answer to this problem: 4x^2 – 2x – 5 = 0
Answer by richwmiller(17219)   (Show Source): You can put this solution on YOUR website!
Use the quadratic formula or complete the square to solve.
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=84 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 1.39564392373896, -0.89564392373896. Here's your graph:
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