x^2-2x=2

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


Simplifying
x2 + -2x = 2

Reorder the terms:
-2x + x2 = 2

Solving
-2x + x2 = 2

Solving for variable 'x'.

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

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

Begin completing the square.

Move the constant term to the right:

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

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

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

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

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 = 2 + 1

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

Combine like terms: 2 + 1 = 3
1 + -2x + x2 = 3

Factor a perfect square on the left side:
(x + -1)(x + -1) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(x + -1) equal to 1.732050808 and -1.732050808.

Subproblem 1

x + -1 = 1.732050808 Simplifying x + -1 = 1.732050808 Reorder the terms: -1 + x = 1.732050808 Solving -1 + x = 1.732050808 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 = 1.732050808 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.732050808 + 1 x = 1.732050808 + 1 Combine like terms: 1.732050808 + 1 = 2.732050808 x = 2.732050808 Simplifying x = 2.732050808

Subproblem 2

x + -1 = -1.732050808 Simplifying x + -1 = -1.732050808 Reorder the terms: -1 + x = -1.732050808 Solving -1 + x = -1.732050808 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 = -1.732050808 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.732050808 + 1 x = -1.732050808 + 1 Combine like terms: -1.732050808 + 1 = -0.732050808 x = -0.732050808 Simplifying x = -0.732050808

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.732050808, -0.732050808}

See similar equations:

| 7(2s-3)=3(4s-5) | | 18(2X+3)=45 | | -6c+-3+5c+3= | | 49*x^2=0 | | -5x-11=6x+11 | | 3z-14=58 | | 9y+6=8y-1 | | 16y-18=-66 | | -87645y=0 | | 5(3r-4)=2(4r-3) | | -7650=10c | | 504+183=x+499 | | 7(3q-8)=5(3q+2) | | 125=25g | | 11j=121 | | 0.4(x-4)=2.8 | | 75x-67=45 | | x^2-6x=11 | | 4x-40=20 | | 5(4p-9)=3(3p+7) | | 5x+4=5(x-9) | | 350t=-700 | | x^3-81x=0 | | 2x-40=20 | | 7m=35 | | 7x+2=-8+4x+19 | | 15+5(x-3)+8(x-3)=-75-2(x+8)-4(x+8) | | 61=16+y | | 3(x+6)=42 | | 10+x=89 | | -(-3x)*(3+2)+4=3 | | 3.1q-2.7-2.2q=0.1q-2.2 |

Equations solver categories