x^2-12x-156=0

Simple and best practice solution for x^2-12x-156=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 x^2-12x-156=0 equation:


Simplifying
x2 + -12x + -156 = 0

Reorder the terms:
-156 + -12x + x2 = 0

Solving
-156 + -12x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '156' to each side of the equation.
-156 + -12x + 156 + x2 = 0 + 156

Reorder the terms:
-156 + 156 + -12x + x2 = 0 + 156

Combine like terms: -156 + 156 = 0
0 + -12x + x2 = 0 + 156
-12x + x2 = 0 + 156

Combine like terms: 0 + 156 = 156
-12x + x2 = 156

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 = 156 + 36

Reorder the terms:
36 + -12x + x2 = 156 + 36

Combine like terms: 156 + 36 = 192
36 + -12x + x2 = 192

Factor a perfect square on the left side:
(x + -6)(x + -6) = 192

Calculate the square root of the right side: 13.856406461

Break this problem into two subproblems by setting 
(x + -6) equal to 13.856406461 and -13.856406461.

Subproblem 1

x + -6 = 13.856406461 Simplifying x + -6 = 13.856406461 Reorder the terms: -6 + x = 13.856406461 Solving -6 + x = 13.856406461 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 = 13.856406461 + 6 Combine like terms: -6 + 6 = 0 0 + x = 13.856406461 + 6 x = 13.856406461 + 6 Combine like terms: 13.856406461 + 6 = 19.856406461 x = 19.856406461 Simplifying x = 19.856406461

Subproblem 2

x + -6 = -13.856406461 Simplifying x + -6 = -13.856406461 Reorder the terms: -6 + x = -13.856406461 Solving -6 + x = -13.856406461 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 = -13.856406461 + 6 Combine like terms: -6 + 6 = 0 0 + x = -13.856406461 + 6 x = -13.856406461 + 6 Combine like terms: -13.856406461 + 6 = -7.856406461 x = -7.856406461 Simplifying x = -7.856406461

Solution

The solution to the problem is based on the solutions from the subproblems. x = {19.856406461, -7.856406461}

See similar equations:

| Y-8y=6 | | x-4/2=3x/4+x-22/6 | | 10X^2+2X-90=0 | | x=b^2x-2bx+8b-16 | | 4(x-1)=4x-14 | | 18=v/-1 | | -2y+19=-5y+1 | | 18=-6y-14 | | -4(2x-2y)=-4(-5) | | 31=3-4y | | -1/3w+5/4=-1/8 | | x+(x-10)+(x-10+2)=30 | | -5v+1=-2v-8 | | 4(y-3)-2y=(3y+1) | | 0.4(4x-5)=0.4(x+4) | | 4=-10+r | | 0.3d=21 | | 16r-24/3=8r-1/7 | | -7=-9+n/4 | | -24-1/3p=3/8p | | .7(4x+3)=1.1-(x+5) | | 5+6z=2(z-1) | | -8x=4/9 | | -12x+3=0 | | 4a+12=2a+20 | | -3z+13=-3 | | 8(2r-3)/3=8r-1/7 | | 4+8(r+1)=8+7r | | 2-(6x-5)=-7(x+7)-6 | | 3(x+4)=8-.50x | | 0=-6t-3 | | -4-2x=6+2(1+2x) |

Equations solver categories