PreCalcPlease check my answerI think I have it
posted by Sheila on .
Could someone please check theseI had tried one last night but it was really wrong so I'm been workinghopefully these are correct.
What are the roots of the equation and answers have to be simplified
2x^2 + 5x10 =0
2x^2 + 5x10+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

ONLY the subject area needs to be typed in the School Subject line. You mess yourself up when you do otherwise.