Find the roots

2x*2 + 4x - 5 = 0

Question

Find the roots

2x*2 + 4x - 5 = 0

diyadiya · Answer

Do you know the quadratic formula?

anonymous · Answer

no

anonymous · Answer

i just need to know the answers because i need to hury up and get my homework turned in

anonymous · Answer

wolfram buddy

anonymous · Answer

http://www.wolframalpha.com/

diyadiya · Answer

Sorry! Please read the Code of Conduct Its against the rules of Openstudy to give 'Just the answers' http://openstudy.com/code-of-conduct

anonymous · Answer

ok

anonymous · Answer

type in the problems and it will give you the answers

anonymous · Answer

ok thanks

anonymous · Answer

it didnt work for that question

blues · Answer

Guys, OpenStudy is a tutoring service and not an answering site. The aim is to teach, not do other peoples' homework but to help them do it themselves. And big part of that is being nice to others.

anonymous · Answer

ok blues can you help me

blues · Answer

Though I am not a math person I will certainly try.

The roots of the equation are the values of x, at which the entire equation equals zero. The easiest way to find them is to factor the equation. That means put it in

(x + a number)*(x + another number) = 0

form.

blues · Answer

Or, because I don't think this one factors easily, use the quadratic formula...

anonymous · Answer

;p

diyadiya · Answer

Yes ,and you can use the quadratic equation to find the roots 

$$\Large x= \frac{-b \pm \sqrt{b^2-4ac}}{2a}$$

Here a =2 ,b=4 ,c=-5

anonymous · Answer

so what would the answer be to that

anonymous · Answer

x=5/8

diyadiya · Answer

Substitute the values of a,b & c to the formula you'll get it!