-2x^2-4x-11=0

Simple and best practice solution for -2x^2-4x-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^2-4x-11=0 equation:


Simplifying
-2x2 + -4x + -11 = 0

Reorder the terms:
-11 + -4x + -2x2 = 0

Solving
-11 + -4x + -2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(11 + 4x + 2x2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(11 + 4x + 2x2)' equal to zero and attempt to solve: Simplifying 11 + 4x + 2x2 = 0 Solving 11 + 4x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 5.5 + 2x + x2 = 0 Move the constant term to the right: Add '-5.5' to each side of the equation. 5.5 + 2x + -5.5 + x2 = 0 + -5.5 Reorder the terms: 5.5 + -5.5 + 2x + x2 = 0 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + 2x + x2 = 0 + -5.5 2x + x2 = 0 + -5.5 Combine like terms: 0 + -5.5 = -5.5 2x + x2 = -5.5 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = -5.5 + 1 Reorder the terms: 1 + 2x + x2 = -5.5 + 1 Combine like terms: -5.5 + 1 = -4.5 1 + 2x + x2 = -4.5 Factor a perfect square on the left side: (x + 1)(x + 1) = -4.5 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:

| 25000+1000x=19000+1500 | | 3x=1+10 | | -1(1+7)-6(-7-x)=36 | | -2x^2+20x-43=0 | | 23=9-2d | | -3f+5=8 | | 5x=50+2x | | 5u+3=6 | | 14-3x=23 | | -8+5d=2 | | -3x^2-6x-6=0 | | 7e-3=-5 | | 9+4w=-5 | | 9.95x=49.95+4.95x | | 11-5m=-4 | | .8y-8=.4y+16 | | -7+2f=-1 | | 3(4x+5)=4x | | 6+9z=9 | | 5x+4=3x-10 | | .30(x+15)+.40(x+25)=25 | | -4x^2+4x-1=0 | | 5u+3=1 | | 4v-3=5 | | 9x^2+24x-16=0 | | 10v^2=13v+3 | | 18n=2n^2 | | 1.4+2.2=2.6z-0.2 | | (9x-7)=(6x+23) | | 12-7x=36-28x | | 3(3x+5)=5(2x-2) | | a=120+34*6-56*3 |

Equations solver categories