Solve each equation.
6x2 + 1 = 13

Question

Asked 9/27/2012 12:33:54 PM

Updated 7/18/2014 4:15:45 AM

1 Answer/Comment

Flagged by andrewpallarca [7/18/2014 4:15:45 AM]

s

Question

Asked 9/27/2012 12:33:54 PM

Updated 7/18/2014 4:15:45 AM

1 Answer/Comment

Flagged by andrewpallarca [7/18/2014 4:15:45 AM]

Rating

8

6x^2 + 1 = 13;

6x^2 + 1 - 13 = 0;

6x^2 - 12 = 0;

6(x^2 - 2) = 0

x = - sqrt 2 or x = sqrt 2

6x^2 + 1 - 13 = 0;

6x^2 - 12 = 0;

6(x^2 - 2) = 0

x = - sqrt 2 or x = sqrt 2

Added 7/18/2014 4:15:43 AM

This answer has been confirmed as correct and helpful.

8

5x^2 - 55 = 90;

5x^2 - 55 - 90 = 0;

5x^2 - 145 = 0;

5(x^2 - 29) = 0;

x = - sqrt 29 or x = sqrt 29

5x^2 - 55 - 90 = 0;

5x^2 - 145 = 0;

5(x^2 - 29) = 0;

x = - sqrt 29 or x = sqrt 29

Added 7/18/2014 4:17:26 AM

This answer has been confirmed as correct and helpful.

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