x^2+12x-26=0

Simple and best practice solution for x^2+12x-26=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-26=0 equation:


Simplifying
x2 + 12x + -26 = 0

Reorder the terms:
-26 + 12x + x2 = 0

Solving
-26 + 12x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '26' to each side of the equation.
-26 + 12x + 26 + x2 = 0 + 26

Reorder the terms:
-26 + 26 + 12x + x2 = 0 + 26

Combine like terms: -26 + 26 = 0
0 + 12x + x2 = 0 + 26
12x + x2 = 0 + 26

Combine like terms: 0 + 26 = 26
12x + x2 = 26

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 = 26 + 36

Reorder the terms:
36 + 12x + x2 = 26 + 36

Combine like terms: 26 + 36 = 62
36 + 12x + x2 = 62

Factor a perfect square on the left side:
(x + 6)(x + 6) = 62

Calculate the square root of the right side: 7.874007874

Break this problem into two subproblems by setting 
(x + 6) equal to 7.874007874 and -7.874007874.

Subproblem 1

x + 6 = 7.874007874 Simplifying x + 6 = 7.874007874 Reorder the terms: 6 + x = 7.874007874 Solving 6 + x = 7.874007874 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 = 7.874007874 + -6 Combine like terms: 6 + -6 = 0 0 + x = 7.874007874 + -6 x = 7.874007874 + -6 Combine like terms: 7.874007874 + -6 = 1.874007874 x = 1.874007874 Simplifying x = 1.874007874

Subproblem 2

x + 6 = -7.874007874 Simplifying x + 6 = -7.874007874 Reorder the terms: 6 + x = -7.874007874 Solving 6 + x = -7.874007874 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 = -7.874007874 + -6 Combine like terms: 6 + -6 = 0 0 + x = -7.874007874 + -6 x = -7.874007874 + -6 Combine like terms: -7.874007874 + -6 = -13.874007874 x = -13.874007874 Simplifying x = -13.874007874

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.874007874, -13.874007874}

See similar equations:

| 10x-43=2x+5 | | 2n+53=47 | | 6+2t-3=7t+9-4t | | 3/5(4)=24 | | 3/5(4)= | | 5/6+4=4 | | 3(x+2)=9(x-7) | | 4r+7=2 | | 4x+39=11x-24 | | 3y-5y+3=11-6y | | 11-6y= | | 3y-5y+3= | | 3+5+6=151872 | | 10-9x=138-37x | | 2ax-8a= | | 3x+12=-88-7x | | 2a(x-4)= | | 86-3x=4x+9 | | 0,2x+0,3=-0,5 | | -33-2x=12-7x | | 0,2x+0,3=--0,5 | | 8x=-21 | | 8x=-9 | | -6(x+1)=24 | | 10x+4=64 | | (4c+2)(2c+-7)=0 | | -2(2x-3)=3(5-4x) | | -2(2x-3)=2(5-4x) | | -3(x-4)=2(x-5) | | 57+2x=12+5x | | -2x-3=11 | | 8x-14=16+2x |

Equations solver categories