-x+1-x^2=0

Simple and best practice solution for -x+1-x^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+1-x^2=0 equation:


Simplifying
-1x + 1 + -1x2 = 0

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

Solving
1 + -1x + -1x2 = 0

Solving for variable 'x'.

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

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

Move the constant term to the right:

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

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

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

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

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 1 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 1 + 0.25

Combine like terms: 1 + 0.25 = 1.25
1.25 + x2 = 1.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 1.25

Calculate the square root of the right side: 1.118033989

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.118033989 and -1.118033989.

Subproblem 1

x + 0.5 = 1.118033989 Simplifying x + 0.5 = 1.118033989 Reorder the terms: 0.5 + x = 1.118033989 Solving 0.5 + x = 1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.118033989 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.118033989 + -0.5 x = 1.118033989 + -0.5 Combine like terms: 1.118033989 + -0.5 = 0.618033989 x = 0.618033989 Simplifying x = 0.618033989

Subproblem 2

x + 0.5 = -1.118033989 Simplifying x + 0.5 = -1.118033989 Reorder the terms: 0.5 + x = -1.118033989 Solving 0.5 + x = -1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.118033989 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.118033989 + -0.5 x = -1.118033989 + -0.5 Combine like terms: -1.118033989 + -0.5 = -1.618033989 x = -1.618033989 Simplifying x = -1.618033989

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.618033989, -1.618033989}

See similar equations:

| 5-3(2x-4)+4x= | | -7-10=20-3a | | x^2y-xy^2+x^2+y^2=0 | | 56-13m=8m-7 | | 5x^2-11x+5= | | 4(x+16)=100 | | 36=9y^2 | | 32x-4=12 | | -27.9=14.4t+0.5(-9.8)t^2 | | 16x+26=22x+8 | | 6n-2n=20 | | 9x^2+24x+7= | | (9x-8)-4(x+2)= | | 2x^2+3y^2+3x-12y-42=0 | | -10(s+3)=-58 | | 6x-2x-2x=14-14-6 | | 40x^3+14x^2+19x-7=0 | | 3x^2-(2k+1)x+4=0 | | y=x[sin(lnx)-cos(lnx)] | | -6x=-28 | | -28=-6x | | 6x^(-1/2) | | 6x^-1/2 | | 6a^3+13a^2+15a= | | 5+4h=0 | | 35r^2+6r-9= | | 15y^2-18y+7= | | 6X-1=2X+15 | | 96=(x-6)(x-2)x | | 5x^2-25x+25=0 | | 0.2(x+70)+1.4x=78 | | 3(2k+2)=2(k+7)-14+2k |

Equations solver categories