x^2-3x=-0.8776-x

Simple and best practice solution for x^2-3x=-0.8776-x 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^2-3x=-0.8776-x equation:


Simplifying
x2 + -3x = -0.8776 + -1x

Reorder the terms:
-3x + x2 = -0.8776 + -1x

Solving
-3x + x2 = -0.8776 + -1x

Solving for variable 'x'.

Reorder the terms:
0.8776 + -3x + x + x2 = -0.8776 + -1x + 0.8776 + x

Combine like terms: -3x + x = -2x
0.8776 + -2x + x2 = -0.8776 + -1x + 0.8776 + x

Reorder the terms:
0.8776 + -2x + x2 = -0.8776 + 0.8776 + -1x + x

Combine like terms: -0.8776 + 0.8776 = 0.0000
0.8776 + -2x + x2 = 0.0000 + -1x + x
0.8776 + -2x + x2 = -1x + x

Combine like terms: -1x + x = 0
0.8776 + -2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-0.8776' to each side of the equation.
0.8776 + -2x + -0.8776 + x2 = 0 + -0.8776

Reorder the terms:
0.8776 + -0.8776 + -2x + x2 = 0 + -0.8776

Combine like terms: 0.8776 + -0.8776 = 0.0000
0.0000 + -2x + x2 = 0 + -0.8776
-2x + x2 = 0 + -0.8776

Combine like terms: 0 + -0.8776 = -0.8776
-2x + x2 = -0.8776

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 = -0.8776 + 1

Reorder the terms:
1 + -2x + x2 = -0.8776 + 1

Combine like terms: -0.8776 + 1 = 0.1224
1 + -2x + x2 = 0.1224

Factor a perfect square on the left side:
(x + -1)(x + -1) = 0.1224

Calculate the square root of the right side: 0.349857114

Break this problem into two subproblems by setting 
(x + -1) equal to 0.349857114 and -0.349857114.

Subproblem 1

x + -1 = 0.349857114 Simplifying x + -1 = 0.349857114 Reorder the terms: -1 + x = 0.349857114 Solving -1 + x = 0.349857114 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 = 0.349857114 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0.349857114 + 1 x = 0.349857114 + 1 Combine like terms: 0.349857114 + 1 = 1.349857114 x = 1.349857114 Simplifying x = 1.349857114

Subproblem 2

x + -1 = -0.349857114 Simplifying x + -1 = -0.349857114 Reorder the terms: -1 + x = -0.349857114 Solving -1 + x = -0.349857114 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 = -0.349857114 + 1 Combine like terms: -1 + 1 = 0 0 + x = -0.349857114 + 1 x = -0.349857114 + 1 Combine like terms: -0.349857114 + 1 = 0.650142886 x = 0.650142886 Simplifying x = 0.650142886

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.349857114, 0.650142886}

See similar equations:

| 456=8(5x+12) | | x^2-4y^2=-28 | | 441=9(-5x-6) | | -4(5-4x)=x+1 | | (u^2-2u)/(u^2-4) | | 5x(x-1)=x+3 | | 3x(x-2)=x-4 | | 3x(x-2)=x-4 | | -5(-8x-16)=-200 | | tanx=-0.72 | | 2m(7m-6)(m+5)=0 | | 13b+12b= | | 63-6x=93-6x | | 12+9x=60 | | 136-6=6x | | 150=-5(-5x+10) | | v=3t^2-4t-4 | | x(x+4)=x^2+16 | | (5-0.1x)/(25+x)=0.05 | | 1.50n+.6=13.50 | | (3x)x=60 | | -2(2s-3)-6=-3(8s+4)-3 | | -9x^2=24x-12 | | x(x-2)=x^2-4 | | 5x3.14/6 | | 2x(x-1)=3-x | | 8(n-3)=4n+4(n-1) | | x^2-3x-1=9-6x | | 3x+12=93x-6x | | -2(1+5k)=-10k+23 | | 2x-(3x-1)=-1 | | x^2-5x+1=10-5x |

Equations solver categories