-2x^2-x-11=0

Simple and best practice solution for -2x^2-x-11=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for -2x^2-x-11=0 equation:


Simplifying
-2x2 + -1x + -11 = 0

Reorder the terms:
-11 + -1x + -2x2 = 0

Solving
-11 + -1x + -2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(11 + x + 2x2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(11 + x + 2x2)' equal to zero and attempt to solve: Simplifying 11 + x + 2x2 = 0 Solving 11 + x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 5.5 + 0.5x + x2 = 0 Move the constant term to the right: Add '-5.5' to each side of the equation. 5.5 + 0.5x + -5.5 + x2 = 0 + -5.5 Reorder the terms: 5.5 + -5.5 + 0.5x + x2 = 0 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + 0.5x + x2 = 0 + -5.5 0.5x + x2 = 0 + -5.5 Combine like terms: 0 + -5.5 = -5.5 0.5x + x2 = -5.5 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.5x + 0.25 + x2 = -5.5 + 0.25 Reorder the terms: 0.25 + 0.5x + x2 = -5.5 + 0.25 Combine like terms: -5.5 + 0.25 = -5.25 0.25 + 0.5x + x2 = -5.25 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -5.25 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

See similar equations:

| .5x+.25=.5 | | 12x^2-4xy-9x+3y= | | 10-4c= | | k^2-18k+81=0 | | 2(x-7)= | | 36=51-3x | | -10-2x=-14 | | 52/64= | | 7+2x=-1 | | 12-8x=182-43x | | 3(x-6)=31-4x | | (.25)m-6=2m+18 | | x^4-8x^2-20=y | | 16p+20q+p-4q-6p=0 | | 3x^2+18x=81 | | -2(3x-4)=4x-12 | | 5(2+3y)=(2y+5)3 | | 4x-7=53-8x | | -16t^2+1499=45 | | -16t^2+1399=0 | | 10m+6n-2m+11n=0 | | 12-8x=43-15x | | t^2+100-20t= | | 3g+3=5(3-6) | | 3c+2=5 | | r+.27=-.59 | | -16t^2+1444=h | | (15x+3)+(10x+2)= | | -8(n-4)-10(n+11)=12n+7n | | 8y=3y-10 | | -8(n-4)-10(n+11)=-12n+7n | | 3x^2+3-3x^2=x-15 |

Equations solver categories