x^2-4x+1=2

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


Simplifying
x2 + -4x + 1 = 2

Reorder the terms:
1 + -4x + x2 = 2

Solving
1 + -4x + x2 = 2

Solving for variable 'x'.

Reorder the terms:
1 + -2 + -4x + x2 = 2 + -2

Combine like terms: 1 + -2 = -1
-1 + -4x + x2 = 2 + -2

Combine like terms: 2 + -2 = 0
-1 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -4x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + -4x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -4x + x2 = 0 + 1
-4x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
-4x + x2 = 1

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 = 1 + 4

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

Combine like terms: 1 + 4 = 5
4 + -4x + x2 = 5

Factor a perfect square on the left side:
(x + -2)(x + -2) = 5

Calculate the square root of the right side: 2.236067978

Break this problem into two subproblems by setting 
(x + -2) equal to 2.236067978 and -2.236067978.

Subproblem 1

x + -2 = 2.236067978 Simplifying x + -2 = 2.236067978 Reorder the terms: -2 + x = 2.236067978 Solving -2 + x = 2.236067978 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 = 2.236067978 + 2 Combine like terms: -2 + 2 = 0 0 + x = 2.236067978 + 2 x = 2.236067978 + 2 Combine like terms: 2.236067978 + 2 = 4.236067978 x = 4.236067978 Simplifying x = 4.236067978

Subproblem 2

x + -2 = -2.236067978 Simplifying x + -2 = -2.236067978 Reorder the terms: -2 + x = -2.236067978 Solving -2 + x = -2.236067978 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 = -2.236067978 + 2 Combine like terms: -2 + 2 = 0 0 + x = -2.236067978 + 2 x = -2.236067978 + 2 Combine like terms: -2.236067978 + 2 = -0.236067978 x = -0.236067978 Simplifying x = -0.236067978

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.236067978, -0.236067978}

See similar equations:

| 16-a=11 | | 2-(1-8n)=6n+13 | | 6*k= | | -6(x-2)+4(3-6x)=(-36) | | 8+4x=2y | | h^2+11+30= | | .4x=25 | | 2.3x-1.5=-8 | | 9x+4+4x+11=12x+3 | | 8a=4(2a+1) | | -75c+5=230 | | X+(-56.18)=-3.78 | | 7x+21=4x | | 3x+5=-18 | | -16v-8.23=-13.9v+19.84-4.55 | | 6(10-x)=(-12) | | -5x-48=-9x+40 | | 33b-33=96 | | 15+-7(2x+9)=18+-4x | | 8=h+12.5 | | 2(x-2)+3=3x+5 | | 1-0.6x+0.08x^2=0 | | 2a-12=5-7a | | 8n+-3=-5 | | 9-3=4+3x-x | | -3(-4-6x)+7(5-x)=(-8) | | -10u+16=-12u-14 | | -5x-8-1x=12 | | 15+2s=33 | | (7-2x)(13-2x)(1x)= | | 66+26+z=180 | | -51+6x=105-7x |

Equations solver categories