Friday

April 25, 2014

April 25, 2014

Posted by **kaitlin** on Thursday, December 3, 2009 at 11:17pm.

Solve by completing the square

- math -
**Reiny**, Thursday, December 3, 2009 at 11:28pm2x^2+x = 28

divide by 2

x^2 + x/2 = 14

add 1/16 to both sides

x^2 + x/2 + 1/16 = 14 + 1/16

x+1/4)^2 = 225/16

x + 1/4 = ± 15/4

x = -1/4 ± 15/4 = 7/2 or -4

**Related Questions**

Algebra 2 - Solve by completing the square. aČ - 2√(3a) + 2 = 0 Solve for ...

math,correction - Is this correct now. Problem #1 solve by completing the square...

math - I'm trying to solve by completing the square but i always get stuck at ...

math 10 - by completing the square method solve the equation. x^2-2x-1 can u ...

Sameul - by completing the square method solve the equation. x^2-2x-1 can u ...

Math - Solve the equation by completing the square. 2x^2 + 9x + 1 = 0

Algebra - Solve by completing the square: x^2+3x-28=0

Math help NOW!!!!! Plz - Solve by completing the square : 2x^2= 9x+5

math - 2x^2 + 5x - 8 = 0 Solve the quadratic equation by completing the square.

math - 2x^2 + 5x - 8 = 0 Solve the quadratic equation by completing the square.