8
0.2x^2 + 1.2 = 3.4
0.2x^2 = 3.4 - 1.2 = 2.2
x^2 = 2.2/0.2 = 11
x = ± sqrt 11
Added 8/12/2014 11:48:43 PM
This answer has been confirmed as correct and helpful.
Confirmed by
jeifunk [8/12/2014 11:50:55 PM]
8
6x^2 + 1 = 13
6x^2 = 13 - 1 = 12
x^2 = 12/6 = 2
x = ± sqrt 2
Added 8/12/2014 11:49:26 PM
This answer has been confirmed as correct and helpful.
Confirmed by
jeifunk [8/12/2014 11:56:36 PM]
8
3x^2 + 2 = 11 - x^2
3x^2 + x^2 = 11 - 2
4x^2 = 9
x^2 = 9/4
x = ± 3/2
Added 8/12/2014 11:51:35 PM
This answer has been confirmed as correct and helpful.
8
x^2 = 144
x = ± 12
Added 8/12/2014 11:52:17 PM
This answer has been confirmed as correct and helpful.
Confirmed by
jeifunk [8/12/2014 11:59:46 PM]
8
(x + 3)(x - 3) = 16 - 2x^2
x^2 - 9 = 16 - 2x^2
x^2 + 2x^2 = 16 + 9
3x^2 = 25
x^2 = 25/3
x = ± (5 sqrt 3)/3
Added 8/12/2014 11:53:52 PM
This answer has been confirmed as correct and helpful.
Confirmed by
jeifunk [8/13/2014 12:00:07 AM]
8
5x^2 - 55 = 90
5x^2 = 90 + 55 = 145
x^2 = 145/5 = 29
x = ± sqrt 29
Added 8/12/2014 11:54:53 PM
This answer has been confirmed as correct and helpful.
Confirmed by
jeifunk [8/13/2014 12:00:25 AM]
8
(2x - 1)(3x + 2) = x + 292
6x^2 + 4x - 3x - 2 = x + 292
6x^2 + x - 2 = x + 292
6x^2 = 292 + 2 = 294
x^2 = 294/6 = 49
x = ± 7
Added 8/12/2014 11:56:11 PM
This answer has been confirmed as correct and helpful.
Confirmed by
jeifunk [8/13/2014 12:00:44 AM]
8
7x^2 = 49
x^2 = 49/7 = 7
x = ± sqrt 7
Added 8/12/2014 11:56:55 PM
This answer has been confirmed as correct and helpful.
Confirmed by
jeifunk [8/13/2014 12:00:56 AM]
