Implement the function *find_roots* to find the roots of the quadratic equation: ax^{2} + bx + c = 0. The function should return an array containing both roots in any order. If the equation has only one solution, the function should return that solution as both elements of the array. The equation will always have at least one solution.

The roots of the quadratic equation can be found with the following formula:

For example, *find_roots(2, 10, 8)* should return *[-1, -4]* or *[-4, -1]* as the roots of the equation 2x^{2} + 10x + 8 = 0 are -1 and -4.

- Example case: Wrong answer
- Equal roots: Wrong answer
- Distinct roots: Wrong answer

##### Tags

Ruby*Public questions*(free account) are common interview questions. They are great for practicing, or if you want to filter candidates using the classic problems.

##### Would you like to see our other questions?

We have 1000+ premium hand-crafted questions for 160+ job skills and 20+ coding languages. We prefer questions with small samples of actual work over academic problems or brain teasers.

Visit our question library##### Private Concierge

Send us an email with an explanation of your testing needs and a list of candidates. We will create an appropriate test, invite your candidates, review their results, and send you a detailed report.

Contact Private Concierge##### Would you like to see our tests? The following tests contain Ruby related questions:

##### On the TestDome Blog

#### Screening Applicants: The Good, the Bad and the Ugly

Since we’re all biased and we use incorrect proxies, why not just outsource hiring to experts or recruitment agencies? After all, they’ve been screening people for many years, so they must know how to do it right?

Not really. I was surprised to discover that many experts disagree with each other. Everybody praises their pet method and criticizes the others. Many of these methods look legitimate, but are based on...