Posted by **KARINA** on Tuesday, June 7, 2011 at 9:16pm.

Solve by completing the square

12x^2+11x=5

- COLLEGE ALGEBRA ..HELP! -
**Reiny**, Tuesday, June 7, 2011 at 9:23pm
divide by 12

x^2 + (11/12)x = 5/12

add the square of half the middle term coefficient

x^2 + 11x/12 + 121/576 = 5/12 + 121/576

(x + 11/24)^2 = 361/576

x+ 11/24 = ± √361/24

x = (-11 ± √361)/24

BTW, just noticed below that bobpursley did the same question for you yesterday

http://www.jiskha.com/display.cgi?id=1307404926

- COLLEGE ALGEBRA ..HELP! -
**Mgraph**, Tuesday, June 7, 2011 at 9:24pm
x^2+11/12x=5/12

x^2+2*(11/24)*x+(11/24)^2=5/12+(11/24)^2

(x+11/24)^2=(19/24)^2

x+11/24=19/24

or

x+11/24=-19/24

- COLLEGE ALGEBRA ..HELP! -
**Reiny**, Tuesday, June 7, 2011 at 9:25pm
How silly of me not to notice that √361 = 19

- COLLEGE ALGEBRA ..HELP! -
**Mgraph**, Tuesday, June 7, 2011 at 9:35pm
Don't worry

sometimes it happens that 2*2=5

- COLLEGE ALGEBRA ..HELP! -
**ricka**, Thursday, December 8, 2011 at 8:11pm
-6a-4=-7a+11=

## Answer this Question

## Related Questions

- COLLEGE ALGEBRA - Solve by completing the square 12x^2+11x=5
- math - I solved this problem 12x-6=11x -6+6=0 11x+6 12x=11x+6 12x-11x=x 11x-11x=...
- algebra - Can anyone tell me if I got this problem right 12x-6=11x 12x-6+6=11x+6...
- Algebra - solve the equation by completing the square 3x^2-12x+1=0
- algebra - 1)Solve by factoring:5x^2=4-19x answer=-4,1/5 2)Which quadratic ...
- Algebra 1b! - 1. Find the excluded value of x for the polynomomial expression ...
- algebra - find a third degree polynomial equation with coefficients that has ...
- college algebra - how to solve this problem. Completing the square. Find the ...
- Algebra - 1)Solve by factoring:5x^2=4-19x answer=-4,1/5 2)Which quadratic ...
- Math - Hi everyone. Would someone be able to help me with this problems? I know ...