Question and answer
3x2 + 2 = 11 - x2
Question
Asked 9/19/2012 11:11:19 AM
Updated 5/25/2015 12:09:32 AM
2 Answers/Comments
Flagged by yeswey [5/25/2015 12:09:32 AM]
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User: 3x2 + 2 = 11 - x2

User: 8x2 - 24 = 3x2 - 9

Question
Asked 9/19/2012 11:11:19 AM
Updated 5/25/2015 12:09:32 AM
2 Answers/Comments
Flagged by yeswey [5/25/2015 12:09:32 AM]
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3
3x^2 + 2 = 11 - x^2
3x^2 + x^2 = 11 - 2
4x^2 = 9
x^2 = 9/4
x = 3/2 or -3/2
Added 5/25/2015 12:07:44 AM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [5/25/2015 12:11:02 AM]
3
8x^2 - 24 = 3x^2 - 9
8x^2 - 3x^2 = -9 + 24
5x^2 = 15
x^2 = 15/5 = 3
x = sqrt 3 or - sqrt 3
Added 5/25/2015 12:09:27 AM
This answer has been confirmed as correct and helpful.
Confirmed by yumdrea [5/25/2015 12:11:49 AM]
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