x^2+12x=-6

Simple and best practice solution for x^2+12x=-6 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 x^2+12x=-6 equation:


Simplifying
x2 + 12x = -6

Reorder the terms:
12x + x2 = -6

Solving
12x + x2 = -6

Solving for variable 'x'.

Reorder the terms:
6 + 12x + x2 = -6 + 6

Combine like terms: -6 + 6 = 0
6 + 12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + 12x + -6 + x2 = 0 + -6

Reorder the terms:
6 + -6 + 12x + x2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 12x + x2 = 0 + -6
12x + x2 = 0 + -6

Combine like terms: 0 + -6 = -6
12x + x2 = -6

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = -6 + 36

Reorder the terms:
36 + 12x + x2 = -6 + 36

Combine like terms: -6 + 36 = 30
36 + 12x + x2 = 30

Factor a perfect square on the left side:
(x + 6)(x + 6) = 30

Calculate the square root of the right side: 5.477225575

Break this problem into two subproblems by setting 
(x + 6) equal to 5.477225575 and -5.477225575.

Subproblem 1

x + 6 = 5.477225575 Simplifying x + 6 = 5.477225575 Reorder the terms: 6 + x = 5.477225575 Solving 6 + x = 5.477225575 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 5.477225575 + -6 Combine like terms: 6 + -6 = 0 0 + x = 5.477225575 + -6 x = 5.477225575 + -6 Combine like terms: 5.477225575 + -6 = -0.522774425 x = -0.522774425 Simplifying x = -0.522774425

Subproblem 2

x + 6 = -5.477225575 Simplifying x + 6 = -5.477225575 Reorder the terms: 6 + x = -5.477225575 Solving 6 + x = -5.477225575 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -5.477225575 + -6 Combine like terms: 6 + -6 = 0 0 + x = -5.477225575 + -6 x = -5.477225575 + -6 Combine like terms: -5.477225575 + -6 = -11.477225575 x = -11.477225575 Simplifying x = -11.477225575

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.522774425, -11.477225575}

See similar equations:

| w^2-13w+42= | | 10x+23+6x-3=180 | | 2(a-4)+3a=3a-2 | | 3z-6=2z+1 | | 2x^2-18x-58= | | 0.3h-0.5=0.2 | | 11x+9-4=10x-4 | | 3(2x-5)=4(5x-2) | | 33+33x= | | 2a-7=-9 | | -31=3G+9-8y | | -7x-5=37 | | 3(4x+5)=51 | | 15x+3y=300 | | m+6m+5m=60 | | 4x^2=7 | | 5p(2-p)= | | 20=v-13 | | 16x^2+8x-4=0 | | 9x+4x+7=12x+3 | | 8x-16=38-x | | -88=-8t | | 11x+9-4=10x-2 | | -7q=21 | | 4x=3x-2 | | 8=-0.4(d+4) | | n+-6=11 | | 4p+8=11+3p | | 1.8d=12 | | -4+u=16 | | 15x+3y-12x-8y= | | 9a=36 |

Equations solver categories