Wednesday

January 28, 2015

January 28, 2015

Posted by **Sheila** on Wednesday, September 7, 2011 at 4:07pm.

What are the roots of the equation and answers have to be simplified

2x^2 + 5x-10 =0

2x^2 + 5x-10+10=0+10

2x^2 + 5x = 10

2x^2 + 5x/2 = 10/2

2x^2/2 + 5x/2 = 5

x^2 + 5/2x = 5

(5/2 * 1/2)^2 = 5/4^2

x^2 + 5/2x + (5/4)^2 = 5 + (5/4)^2

(x+5/4)^2 = 105/16

x + 5/4 = +minus sqrt 105/16 = sqrt 3^1 * 5^1*7^1 = sqrt 105/4

x= -5/4 + sqrt105/4 or x= -5/4 - sqrt 105/4 Is this correct and simplified thank you Someone suggested a site that will do it but I want to learn on my own

- Pre-Calc-Please check my answer-I think I have it -
**Bosnian**, Wednesday, September 7, 2011 at 4:57pmIn google type:

quadratic equation online

When you see list of results click on:

Free Online Quadratic Equation Solver:Solve by Quadratic Formula

When page be open in rectangle type:

2x^2 + 5x = 10

and click option:

solve it!

You wil see solution step-by-step.

**Answer this Question**

**Related Questions**

Pre-Calc-Please check my answer-I think its correc - Could someone please check ...

Pre-Calc-Please check my answer-I think I have it - Could someone please check ...

Pre-Calc - Could someone please check these-I had tried one last night but it ...

Pre-Calculus/Trig Check please and help - Could someone please check the first ...

Pre-Calc-Please check I'm desperate - Please check my answers I really need to ...

Pre-Algebra - Can I have someone check this please? I wouldn't want to do the ...

Pre-Calc - Can someone check this? Thanks! :) Which pair(s) of functions are ...

Pre-Calc - Please check answer and help with one of them: 1. check please car in...

Pre-Calc - Please check answer and help with one of them: 1. check please car in...

I have posted this so many times..can someone help - I need someone to right an ...