1-x^2=2x

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


Simplifying
1 + -1x2 = 2x

Solving
1 + -1x2 = 2x

Solving for variable 'x'.

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

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

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-1 + 2x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 2x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + 2x + x2 = 0 + 1

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

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

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 = 1 + 1

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

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

Factor a perfect square on the left side:
(x + 1)(x + 1) = 2

Calculate the square root of the right side: 1.414213562

Break this problem into two subproblems by setting 
(x + 1) equal to 1.414213562 and -1.414213562.

Subproblem 1

x + 1 = 1.414213562 Simplifying x + 1 = 1.414213562 Reorder the terms: 1 + x = 1.414213562 Solving 1 + x = 1.414213562 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 = 1.414213562 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.414213562 + -1 x = 1.414213562 + -1 Combine like terms: 1.414213562 + -1 = 0.414213562 x = 0.414213562 Simplifying x = 0.414213562

Subproblem 2

x + 1 = -1.414213562 Simplifying x + 1 = -1.414213562 Reorder the terms: 1 + x = -1.414213562 Solving 1 + x = -1.414213562 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 = -1.414213562 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.414213562 + -1 x = -1.414213562 + -1 Combine like terms: -1.414213562 + -1 = -2.414213562 x = -2.414213562 Simplifying x = -2.414213562

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.414213562, -2.414213562}

See similar equations:

| 0.25(x-7)=0.875x | | Y=-6(x-12)+12-5 | | 3/4z=15 | | -2(x-6)+7=36 | | 36-z=-36 | | Y=-4(0)+7+-2 | | y+10+8=36 | | -6(-5-v)+5v=96 | | Y=-4(-2)+7-2 | | 6+2.5=21 | | 5(10x+16)=580 | | v/7-10 | | -4(8v+2)-52=100 | | 1/3p=3 | | 732-5=600 | | 5x-(100+2x)=4x-2(10+5) | | 16+9=29 | | (Fx)=0 | | -1=-3x-1 | | -3(-4x-8)+2(6-6x)=-6x+2x | | -5(x+5)=-80+6x | | x+.20x=145 | | 2(3+x)=34 | | 48/y=3 | | 4(6z+1)-z-16= | | -138=6(1-8x) | | -3(2y+9)= | | f(x)=x^2-12x+31 | | 35+(2x+16)+(4x+13)=360 | | 1(3x-5)=8-(5x+5) | | 8(2k+2)= | | 3b+2w=92 |

Equations solver categories