x^2-4x-1=26

Simple and best practice solution for x^2-4x-1=26 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^2-4x-1=26 equation:


Simplifying
x2 + -4x + -1 = 26

Reorder the terms:
-1 + -4x + x2 = 26

Solving
-1 + -4x + x2 = 26

Solving for variable 'x'.

Reorder the terms:
-1 + -26 + -4x + x2 = 26 + -26

Combine like terms: -1 + -26 = -27
-27 + -4x + x2 = 26 + -26

Combine like terms: 26 + -26 = 0
-27 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '27' to each side of the equation.
-27 + -4x + 27 + x2 = 0 + 27

Reorder the terms:
-27 + 27 + -4x + x2 = 0 + 27

Combine like terms: -27 + 27 = 0
0 + -4x + x2 = 0 + 27
-4x + x2 = 0 + 27

Combine like terms: 0 + 27 = 27
-4x + x2 = 27

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = 27 + 4

Reorder the terms:
4 + -4x + x2 = 27 + 4

Combine like terms: 27 + 4 = 31
4 + -4x + x2 = 31

Factor a perfect square on the left side:
(x + -2)(x + -2) = 31

Calculate the square root of the right side: 5.567764363

Break this problem into two subproblems by setting 
(x + -2) equal to 5.567764363 and -5.567764363.

Subproblem 1

x + -2 = 5.567764363 Simplifying x + -2 = 5.567764363 Reorder the terms: -2 + x = 5.567764363 Solving -2 + x = 5.567764363 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 5.567764363 + 2 Combine like terms: -2 + 2 = 0 0 + x = 5.567764363 + 2 x = 5.567764363 + 2 Combine like terms: 5.567764363 + 2 = 7.567764363 x = 7.567764363 Simplifying x = 7.567764363

Subproblem 2

x + -2 = -5.567764363 Simplifying x + -2 = -5.567764363 Reorder the terms: -2 + x = -5.567764363 Solving -2 + x = -5.567764363 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -5.567764363 + 2 Combine like terms: -2 + 2 = 0 0 + x = -5.567764363 + 2 x = -5.567764363 + 2 Combine like terms: -5.567764363 + 2 = -3.567764363 x = -3.567764363 Simplifying x = -3.567764363

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.567764363, -3.567764363}

See similar equations:

| 24x^5y^4/4x^2= | | p=4x+2pix | | Logx(12+x)=2 | | 14-6x/9 | | 50x+8=44x+2 | | 3(6x-8)= | | 8x-0.2=9z | | 100/n=10x | | 3(c-5)=2c-4 | | 162=6x+3(6x+14) | | 7z-5=8z-4 | | 7x+4(2x+11)=119 | | -3(z-5)=-2z-6 | | (xa-xb)/(a-b) | | 146=2x+6(x+11) | | 14-3/5x=2 | | (r+4)(r+4)=-15 | | 2(3c-1)-2=4c+6 | | 126=7x+7(2x-15) | | (0.30x+5)(x+25)=0.27 | | 6x+4(2x-9)=62 | | (X-2)^2/5=(9X-38)^1/5 | | 4x+6(2x+4)=152 | | 5x-35=5x/2 | | 2z-(8-3z)= | | 2/3a-1/3a=5 | | 3x/15_34 | | 2.0(n-6)=2.8 | | 5-2tanx=0 | | 13x+4=9x+2 | | 4x+5(2x-2)=60 | | c^2-9c+3=0 |

Equations solver categories