x=-x^2+4x-1

Simple and best practice solution for x=-x^2+4x-1 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^2+4x-1 equation:


Simplifying
x = -1x2 + 4x + -1

Reorder the terms:
x = -1 + 4x + -1x2

Solving
x = -1 + 4x + -1x2

Solving for variable 'x'.

Reorder the terms:
1 + x + -4x + x2 = -1 + 4x + -1x2 + 1 + -4x + x2

Combine like terms: x + -4x = -3x
1 + -3x + x2 = -1 + 4x + -1x2 + 1 + -4x + x2

Reorder the terms:
1 + -3x + x2 = -1 + 1 + 4x + -4x + -1x2 + x2

Combine like terms: -1 + 1 = 0
1 + -3x + x2 = 0 + 4x + -4x + -1x2 + x2
1 + -3x + x2 = 4x + -4x + -1x2 + x2

Combine like terms: 4x + -4x = 0
1 + -3x + x2 = 0 + -1x2 + x2
1 + -3x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
1 + -3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -3x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + -3x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -3x + x2 = 0 + -1
-3x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
-3x + x2 = -1

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = -1 + 2.25

Reorder the terms:
2.25 + -3x + x2 = -1 + 2.25

Combine like terms: -1 + 2.25 = 1.25
2.25 + -3x + x2 = 1.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 1.25

Calculate the square root of the right side: 1.118033989

Break this problem into two subproblems by setting 
(x + -1.5) equal to 1.118033989 and -1.118033989.

Subproblem 1

x + -1.5 = 1.118033989 Simplifying x + -1.5 = 1.118033989 Reorder the terms: -1.5 + x = 1.118033989 Solving -1.5 + x = 1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 1.118033989 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 1.118033989 + 1.5 x = 1.118033989 + 1.5 Combine like terms: 1.118033989 + 1.5 = 2.618033989 x = 2.618033989 Simplifying x = 2.618033989

Subproblem 2

x + -1.5 = -1.118033989 Simplifying x + -1.5 = -1.118033989 Reorder the terms: -1.5 + x = -1.118033989 Solving -1.5 + x = -1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -1.118033989 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -1.118033989 + 1.5 x = -1.118033989 + 1.5 Combine like terms: -1.118033989 + 1.5 = 0.381966011 x = 0.381966011 Simplifying x = 0.381966011

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.618033989, 0.381966011}

See similar equations:

| (D^2+1)y=sinx | | -6(2n-2)+12=4(2n-9) | | 30/(14-4)*3^2-12 | | 24=18x+12 | | 9sin^2x+6cosx-8=0 | | (D^2+D+1)y=sinx | | 25x-9=11 | | X^2+x=14+42 | | 5(x-3)+6=5x-11 | | 3/4((x-16)=2(x-3)=4 | | x=-x^3+4x-1 | | 0=20+6t-t^2 | | 91=5v+11 | | 12x+3x=0 | | 1/4r=4 | | ((1/3)((2/5)x-(1/5)))/(1/15) | | 1/4r | | -20=6t-4.9t^2 | | 5v-12=68 | | 40=3p/5 | | 0.7x=252 | | 17=x/4-53 | | 0.8x+x=192 | | 5w+10=85 | | 3x-(3)=-2 | | 14*x=196 | | 7r-15=12r+8 | | 3(-2)-y=-2 | | x^4-x^2+6*x-20=0 | | 3x-(-1)=-2 | | 25-1/4x^2=0 | | x^3+2x^2-4x-4=0 |

Equations solver categories