Friday

November 21, 2014

November 21, 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

**Answer this Question**

**Related Questions**

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

Algebra - Which of the following statements is true? A. Any quadratic equation ...

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

maths - Consider the equation x(square) + 4px + 2q = 0 where p and q are real ...

Math - Hi everyone. Would someone be able to help me with this problems? I know ...

Algebra 2 - Completing the square method allows you to solve any quadratic ...

math - 1. solve by using the quadratic formula. 5x^2+x=3 2. solve by completing ...

math - i need to solve this equation by completing the square: x^2-14x+1=0 i don...

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

Math - Solve the equation by factoring, by finding square roots, or by ...