Can someone help with my math question
Favorites|Homepage
Subscriptions | sitemap
HOME > > Can someone help with my math question

Can someone help with my math question

[From: ] [author: ] [Date: 12-06-27] [Hit: ]
..x = 1/4 or 0.check in the original equation.........
-12x^2+6x=0.75

what x be?

-
-12x^2+6x=3/4

-48x^2 + 24x = 3

-48x^2 + 24x - 3 = 0
48x^2 - 24x + 3 = 0

3(16x^2 - 8x + 1) = 0

3(4x-1)(4x+1) = 0

x = 1/4

-
- 12x^2 + 6x = 0.75

multiply through by (- 4/3)

16x^2 - 8x = - 1

16x^2 - 8x + 1 = 0

perfect square trinomial...

(4x - 1)^2 = 0

x = 1/4 or 0.25

check in the original equation...

id est

-
multiply each side by -4 48x^2-24x=3 then subtract each side by 3 48x^2-24x-3=0

divide by 3 each side 16x^2-8x-1=0 use quadratic formula to solve this

-
12x^2-6x+0.75 = 0 Use the quadratic formula
x = [6±0]/24 = 1/4

-
hey whats the ^ for is it squared. i could probably get this.

-
factor and you get
x=0.25
1
keywords: help,my,Can,question,with,math,someone,Can someone help with my math question
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .