x^2-14x-26=0

Simple and best practice solution for x^2-14x-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^2-14x-26=0 equation:


Simplifying
x2 + -14x + -26 = 0

Reorder the terms:
-26 + -14x + x2 = 0

Solving
-26 + -14x + 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 + -14x + 26 + x2 = 0 + 26

Reorder the terms:
-26 + 26 + -14x + x2 = 0 + 26

Combine like terms: -26 + 26 = 0
0 + -14x + x2 = 0 + 26
-14x + x2 = 0 + 26

Combine like terms: 0 + 26 = 26
-14x + x2 = 26

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = 26 + 49

Reorder the terms:
49 + -14x + x2 = 26 + 49

Combine like terms: 26 + 49 = 75
49 + -14x + x2 = 75

Factor a perfect square on the left side:
(x + -7)(x + -7) = 75

Calculate the square root of the right side: 8.660254038

Break this problem into two subproblems by setting 
(x + -7) equal to 8.660254038 and -8.660254038.

Subproblem 1

x + -7 = 8.660254038 Simplifying x + -7 = 8.660254038 Reorder the terms: -7 + x = 8.660254038 Solving -7 + x = 8.660254038 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 8.660254038 + 7 Combine like terms: -7 + 7 = 0 0 + x = 8.660254038 + 7 x = 8.660254038 + 7 Combine like terms: 8.660254038 + 7 = 15.660254038 x = 15.660254038 Simplifying x = 15.660254038

Subproblem 2

x + -7 = -8.660254038 Simplifying x + -7 = -8.660254038 Reorder the terms: -7 + x = -8.660254038 Solving -7 + x = -8.660254038 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -8.660254038 + 7 Combine like terms: -7 + 7 = 0 0 + x = -8.660254038 + 7 x = -8.660254038 + 7 Combine like terms: -8.660254038 + 7 = -1.660254038 x = -1.660254038 Simplifying x = -1.660254038

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.660254038, -1.660254038}

See similar equations:

| 12x^2+5x-9=-6 | | x-7=2+6 | | -8+8x=56 | | 4x/3=4 | | b/6-2=4 | | 6y+8=78-4y | | 8x+5x+2+8=10x+4+2x | | (2+x)(3-x)=0 | | -9(4b+3)+(37b-1)=0 | | 16t^2=125-h | | 2-3y=4 | | (17b-6)-4(4b+3)=-6 | | 5/2d+1=3d-4 | | 50-3y=24y+17 | | DC=10 | | y=2x^2+3x+4 | | 11-10y=83-24y | | 5(4)= | | m+2h-3f= | | -41-9y=7y+23 | | 5+11y=115+y | | 6y-2=16y-102 | | 5y+11=-93-8y | | 6y+26=14y-70 | | 149-4y=5y+23 | | 10y-5=8y+5 | | 25x^2+125x=0 | | -9-4y=9-10y | | y=x^2-13x+36 | | (3/4x+1)+(7/x+9)=13/10x | | r^2-4r-77=0 | | 5y+74=10y+14 |

Equations solver categories