(x^2)-(4x)+(2)=0

Simple and best practice solution for (x^2)-(4x)+(2)=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)-(4x)+(2)=0 equation:


Simplifying
(x2) + -1(4x) + (2) = 0
x2 + -1(4x) + (2) = 0

Remove parenthesis around (4x)
x2 + -1 * 4x + (2) = 0

Multiply -1 * 4
x2 + -4x + (2) = 0
x2 + -4x + 2 = 0

Reorder the terms:
2 + -4x + x2 = 0

Solving
2 + -4x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -4x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + -4x + x2 = 0 + -2

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

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

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 = -2 + 4

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

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

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

Calculate the square root of the right side: 1.414213562

Break this problem into two subproblems by setting 
(x + -2) equal to 1.414213562 and -1.414213562.

Subproblem 1

x + -2 = 1.414213562 Simplifying x + -2 = 1.414213562 Reorder the terms: -2 + x = 1.414213562 Solving -2 + x = 1.414213562 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 = 1.414213562 + 2 Combine like terms: -2 + 2 = 0 0 + x = 1.414213562 + 2 x = 1.414213562 + 2 Combine like terms: 1.414213562 + 2 = 3.414213562 x = 3.414213562 Simplifying x = 3.414213562

Subproblem 2

x + -2 = -1.414213562 Simplifying x + -2 = -1.414213562 Reorder the terms: -2 + x = -1.414213562 Solving -2 + x = -1.414213562 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 = -1.414213562 + 2 Combine like terms: -2 + 2 = 0 0 + x = -1.414213562 + 2 x = -1.414213562 + 2 Combine like terms: -1.414213562 + 2 = 0.585786438 x = 0.585786438 Simplifying x = 0.585786438

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.414213562, 0.585786438}

See similar equations:

| 2(x+3)+8=5x-3(-4+x) | | e-11.7=37.1 | | 8x^2-16x+80=0 | | 10y+2=81 | | 11x+77=-63+6x | | 0.02(y-8)+0.20y=0.14y-0.7 | | 10000x=80+4x+0.1x^2 | | -7(3x-1)=-91 | | 6(20-5)= | | p-4.9=24.9 | | 27-15=3(37+2x) | | 3m+1=2m | | 0.4x-0.9x-19=1 | | 0.12(0.04)= | | 9x-y+1=0 | | 4x^2+5x=11 | | 2x-1-x=-2 | | 5b+6-64+2=19 | | 2x+9/6=11 | | j-18.5=19.6 | | -51k=65 | | 2x(18x+1)=2x+25 | | 3x*30=5x | | -(6-x)=24 | | 6c-5=5.0(6+4c) | | 11(k-1)=7(k-7) | | 6x^2+11x=8 | | 6c-5=2(6+4c) | | 16=-3(2x+1)+7x | | 20x^4-21x^2+1=0 | | 2x^2+16x=5x+21 | | In(x^4)-In(x^2y)+In(y^2)=0 |

Equations solver categories