x*x-2x-3.586=0

Simple and best practice solution for x*x-2x-3.586=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*x-2x-3.586=0 equation:


Simplifying
x * x + -2x + -3.586 = 0

Multiply x * x
x2 + -2x + -3.586 = 0

Reorder the terms:
-3.586 + -2x + x2 = 0

Solving
-3.586 + -2x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '3.586' to each side of the equation.
-3.586 + -2x + 3.586 + x2 = 0 + 3.586

Reorder the terms:
-3.586 + 3.586 + -2x + x2 = 0 + 3.586

Combine like terms: -3.586 + 3.586 = 0.000
0.000 + -2x + x2 = 0 + 3.586
-2x + x2 = 0 + 3.586

Combine like terms: 0 + 3.586 = 3.586
-2x + x2 = 3.586

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 3.586 + 1

Reorder the terms:
1 + -2x + x2 = 3.586 + 1

Combine like terms: 3.586 + 1 = 4.586
1 + -2x + x2 = 4.586

Factor a perfect square on the left side:
(x + -1)(x + -1) = 4.586

Calculate the square root of the right side: 2.141494805

Break this problem into two subproblems by setting 
(x + -1) equal to 2.141494805 and -2.141494805.

Subproblem 1

x + -1 = 2.141494805 Simplifying x + -1 = 2.141494805 Reorder the terms: -1 + x = 2.141494805 Solving -1 + x = 2.141494805 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 2.141494805 + 1 Combine like terms: -1 + 1 = 0 0 + x = 2.141494805 + 1 x = 2.141494805 + 1 Combine like terms: 2.141494805 + 1 = 3.141494805 x = 3.141494805 Simplifying x = 3.141494805

Subproblem 2

x + -1 = -2.141494805 Simplifying x + -1 = -2.141494805 Reorder the terms: -1 + x = -2.141494805 Solving -1 + x = -2.141494805 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -2.141494805 + 1 Combine like terms: -1 + 1 = 0 0 + x = -2.141494805 + 1 x = -2.141494805 + 1 Combine like terms: -2.141494805 + 1 = -1.141494805 x = -1.141494805 Simplifying x = -1.141494805

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.141494805, -1.141494805}

See similar equations:

| 4(-3x+4)=-3 | | -w^2-5w+24= | | -8f-9=9-6f | | x^2+y^2-10x+6y+36=0 | | 10x^2-3=37 | | -5u+8=-3u-4 | | -6x-9y=-33 | | X/1=50 | | -3k=-8k-10 | | 8/x-5=7/16 | | Y^2-10=26 | | -7z+9=4z-2 | | 16+(-13)+15= | | 5(x+2)-8=17 | | 8n+6=5n+7 | | -v^2-4v+90= | | -2c=-4c-6 | | 7(3m+7)=-5+3m | | C^2+cx+8=0 | | 2x+3x-60=180 | | 9g=10g+8 | | -42-5x= | | -8d=-9d+9 | | -3(2x+1)=-2(2n-1) | | 16x-1=-15x | | 6h+7=5h | | 14x-11y=-3 | | 2(3z+2z)= | | Sin(x)Cos(x)=0.1 | | -c^2-5c+84= | | 0.2(10-x)+0.6x=0.44(10) | | -5(-5)+y=4 |

Equations solver categories